{
  "title": "Probability_basic_introduction - Grade 7 CBSE",
  "total_questions": 150,
  "questions": [

    {"id": 1, "difficulty": "easy", "question": "Probability of getting a head when a coin is tossed?", "options": {"A": "1/2", "B": "1/3", "C": "1/4", "D": "1"}, "correct_answer": "A"},
    {"id":2,"difficulty":"easy","question":"Probability of getting a number from 1 to 6 on a die?","options":{"A":"1/6","B":"1/3","C":"1/2","D":"1"},"correct_answer":"D"},
 {"id": 3, "difficulty": "easy", "question": "Probability of getting an even number on a die?", "options": {"A": "1/6", "B": "1/3", "C": "1/2", "D": "2/3"}, "correct_answer": "C"},
    {"id": 4, "difficulty": "easy", "question": "Probability of selecting a red ball from a bag of only red balls?", "options": {"A": "0", "B": "1/4", "C": "1/2", "D": "1"}, "correct_answer": "D"},
    {"id": 5, "difficulty": "easy", "question": "Probability of getting a weekday when randomly choosing a day?", "options": {"A": "5/7", "B": "1/2", "C": "2/7", "D": "3/7"}, "correct_answer": "A"},
    {"id":6,"difficulty":"easy","question":"Probability of choosing a vowel from A, E, I, O, U?","options":{"A":"1/5","B":"2/5","C":"3/5","D":"1"},"correct_answer":"D"},
 {"id": 7, "difficulty": "easy", "question": "Probability of selecting a prime number from {2,3,4,5}?", "options": {"A": "1/4", "B": "1/2", "C": "3/4", "D": "4/4"}, "correct_answer": "C"},
    {"id":8,"difficulty":"easy","question":"Probability of rolling a number greater than 4 on a die?","options":{"A":"1/6","B":"1/3","C":"1/2","D":"2/3"},"correct_answer":"B"},
 {"id": 9, "difficulty": "easy", "question": "Probability of drawing a king from a deck of 52 cards?", "options": {"A": "4/52", "B": "1/52", "C": "1/26", "D": "1/13"}, "correct_answer": "A"},
    {"id": 10, "difficulty": "easy", "question": "Probability of getting 0 when spinning a spinner with numbers 0–9?", "options": {"A": "1/5", "B": "1/10", "C": "1/2", "D": "3/10"}, "correct_answer": "B"},
    {"id": 11, "difficulty": "easy", "question": "Probability of getting tails on a coin?", "options": {"A": "1/4", "B": "1/3", "C": "1/2", "D": "3/4"}, "correct_answer": "C"},
   {"id":12,"difficulty":"easy","question":"Probability of selecting even number from {1,2,3,4}?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"B"},
 {"id": 13, "difficulty": "easy", "question": "Probability of picking a blue ball if only 1 blue ball in 10 balls?", "options": {"A": "1/10", "B": "1/5", "C": "1/2", "D": "1"}, "correct_answer": "A"},
    {"id": 14, "difficulty": "easy", "question": "Probability of choosing a consonant from English alphabet?", "options": {"A": "5/26", "B": "21/26", "C": "10/26", "D": "1/26"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "Probability of drawing an ace from 52 cards?", "options": {"A": "1/13", "B": "1/52", "C": "4/52", "D": "2/52"}, "correct_answer": "C"},
    {"id":16,"difficulty":"easy","question":"Probability of getting 3 on a die?","options":{"A":"1/2","B":"1/3","C":"1/6","D":"0"},"correct_answer":"C"},
 {"id": 17, "difficulty": "easy", "question": "Probability of selecting a factor of 6 from {1,2,3,4,5,6}?", "options": {"A": "1/3", "B": "1/2", "C": "2/3", "D": "3/6"}, "correct_answer": "A"},
    {"id": 18, "difficulty": "easy", "question": "Probability of selecting 1 from numbers 1–100?", "options": {"A": "1/10", "B": "1/100", "C": "1/50", "D": "1/25"}, "correct_answer": "B"},
    {"id":19,"difficulty":"easy","question":"Probability of getting a number less than 3 on a die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},

  {"id":20,"difficulty":"easy","question":"Probability of selecting odd number from {1,2,3,4,5}?","options":{"A":"1/5","B":"2/5","C":"3/5","D":"4/5"},"correct_answer":"C"},

    {"id": 21, "difficulty": "medium", "question": "A bag has 4 red, 3 blue balls. Probability of blue?", "options": {"A": "3/8", "B": "4/8", "C": "5/8", "D": "3/7"}, "correct_answer": "A"},
    {"id": 22, "difficulty": "medium", "question": "Probability of selecting a vowel from word MATH?", "options": {"A": "1/2", "B": "1/4", "C": "1/3", "D": "0"}, "correct_answer": "B"},
    {"id":23,"difficulty":"medium","question":"A die is rolled. Probability of number ≥ 5?","options":{"A":"2/6","B":"1/6","C":"3/6","D":"4/6"},"correct_answer":"A"},

  {"id":24,"difficulty":"medium","question":"Picking a card from 52 cards. Probability of face card?","options":{"A":"3/52","B":"12/52","C":"4/52","D":"2/52"},"correct_answer":"B"},
 {"id": 25, "difficulty": "medium", "question": "Probability of getting sum 7 when two dice are rolled?", "options": {"A": "1/6", "B": "2/6", "C": "3/36", "D": "6/36"}, "correct_answer": "A"},
    {"id":26,"difficulty":"medium","question":"Probability of drawing queen from a deck?","options":{"A":"1/52","B":"1/26","C":"4/52","D":"1/13"},"correct_answer":"D"},

  {"id":27,"difficulty":"medium","question":"Probability of selecting a multiple of 3 from 1–12?","options":{"A":"1/4","B":"1/3","C":"1/2","D":"2/3"},"correct_answer":"B"},

  {"id":28,"difficulty":"medium","question":"A jar has 10 marbles (3 red, 7 blue). Probability of selecting red?","options":{"A":"1/10","B":"3/10","C":"7/10","D":"9/10"},"correct_answer":"B"},

  {"id":29,"difficulty":"medium","question":"Probability of getting an odd sum on two dice?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"1/2"},"correct_answer":"D"},
  {"id": 30, "difficulty": "medium", "question": "Probability of picking a consonant from SCIENCE?", "options": {"A": "3/7", "B": "4/7", "C": "5/7", "D": "6/7"}, "correct_answer": "B"},
   {"id":31,"difficulty":"medium","question":"Probability of number divisible by 5 from 1–20?","options":{"A":"1/4","B":"1/5","C":"1/2","D":"1/20"},"correct_answer":"B"},

  {"id":32,"difficulty":"medium","question":"A bag has 5 black and 5 white balls. Probability of selecting white?","options":{"A":"1/10","B":"1/5","C":"1/2","D":"3/5"},"correct_answer":"C"},

  {"id":33,"difficulty":"medium","question":"Probability of getting a composite number on a die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},
   {"id": 34, "difficulty": "medium", "question": "Selecting letter from alphabet. P(letter < M)?", "options": {"A": "12/26", "B": "13/26", "C": "14/26", "D": "15/26"}, "correct_answer": "B"},
    {"id":35,"difficulty":"medium","question":"Probability of drawing a heart from a deck?","options":{"A":"1/4","B":"1/13","C":"1/26","D":"4/52"},"correct_answer":"A"},
 {"id": 36, "difficulty": "medium", "question": "Probability of selecting factor of 12 from 1–12?", "options": {"A": "1/6", "B": "1/3", "C": "1/2", "D": "2/3"}, "correct_answer": "D"},
    {"id":37,"difficulty":"medium","question":"Probability of selecting a prime from 1–10?","options":{"A":"2/10","B":"4/10","C":"5/10","D":"6/10"},"correct_answer":"B"},
 {"id": 38, "difficulty": "medium", "question": "Probability of rolling a square number?", "options": {"A": "1/6", "B": "2/6", "C": "3/6", "D": "4/6"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "Bag has 2 red, 3 yellow, 5 green balls. P(green)?", "options": {"A": "1/5", "B": "3/10", "C": "1/2", "D": "5/10"}, "correct_answer": "C"},
    {"id":40,"difficulty":"medium","question":"Probability of odd number from 2–10?","options":{"A":"3/9","B":"4/9","C":"5/9","D":"7/9"},"correct_answer":"B"},

  {"id":41,"difficulty":"hard","question":"Two coins are tossed. Probability of getting exactly one head?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"B"},
    {"id": 42, "difficulty": "hard", "question": "Two dice rolled. P(sum = 10)?", "options": {"A": "2/36", "B": "3/36", "C": "4/36", "D": "5/36"}, "correct_answer": "B"},
   {"id":43,"difficulty":"hard","question":"Probability of drawing a red face card from a deck?","options":{"A":"2/52","B":"6/52","C":"8/52","D":"12/52"},"correct_answer":"B"},

  {"id":44,"difficulty":"hard","question":"Three coins are tossed. Probability of getting all heads?","options":{"A":"1/8","B":"2/8","C":"3/8","D":"4/8"},"correct_answer":"A"},

  {"id":45,"difficulty":"hard","question":"A bag has 3 red, 4 blue and 5 green balls. Probability of selecting red or green?","options":{"A":"3/12","B":"5/12","C":"8/12","D":"9/12"},"correct_answer":"C"},
   {"id": 46, "difficulty": "hard", "question": "Two dice rolled. P(doubles)?", "options": {"A": "1/12", "B": "1/6", "C": "1/3", "D": "1/2"}, "correct_answer": "B"},
   {"id":47,"difficulty":"hard","question":"Two dice are rolled. Probability that the sum is even?","options":{"A":"1/3","B":"1/2","C":"2/3","D":"3/4"},"correct_answer":"B"},
 {"id": 48, "difficulty": "hard", "question": "Two cards drawn (no replacement). P(two hearts)?", "options": {"A": "1/52", "B": "1/26", "C": "1/17", "D": "1/13"}, "correct_answer": "D"},
   {"id":49,"difficulty":"hard","question":"Probability of getting exactly 2 tails in 3 coin tosses?","options":{"A":"1/8","B":"2/8","C":"3/8","D":"4/8"},"correct_answer":"C"},
 {"id": 50, "difficulty": "hard", "question": "Bag: 2R, 2B, 6G. P(not green)?", "options": {"A": "2/10", "B": "4/10", "C": "6/10", "D": "8/10"}, "correct_answer": "B"},
    {"id": 51, "difficulty": "hard", "question": "Spinner with 8 equal sectors. P(prime)?", "options": {"A": "2/8", "B": "3/8", "C": "4/8", "D": "5/8"}, "correct_answer": "C"},
   {"id":52,"difficulty":"hard","question":"Probability of drawing a king or a queen from a deck?","options":{"A":"2/52","B":"4/52","C":"8/52","D":"16/52"},"correct_answer":"C"},

  {"id":53,"difficulty":"hard","question":"Two dice are rolled. Probability that the sum is greater than 9?","options":{"A":"3/36","B":"4/36","C":"6/36","D":"10/36"},"correct_answer":"C"},
 {"id": 54, "difficulty": "hard", "question": "P(rolling perfect square on two dice)?", "options": {"A": "4/36", "B": "6/36", "C": "8/36", "D": "10/36"}, "correct_answer": "B"},
    {"id": 55, "difficulty": "hard", "question": "Urn: 4R, 6B. Two drawn. P(both blue)?", "options": {"A": "6/10", "B": "6/45", "C": "15/45", "D": "30/45"}, "correct_answer": "C"},
    {"id":56,"difficulty":"hard","question":"Probability of getting H, T, H in three coin tosses (in the same order)?","options":{"A":"1/8","B":"2/8","C":"3/8","D":"4/8"},"correct_answer":"A"},
 {"id": 57, "difficulty": "hard", "question": "Two dice. P(no 6 appears)?", "options": {"A": "25/36", "B": "20/36", "C": "10/36", "D": "5/36"}, "correct_answer": "A"},
    {"id":58,"difficulty":"hard","question":"Probability of drawing a non-face card from a deck?","options":{"A":"12/52","B":"16/52","C":"36/52","D":"40/52"},"correct_answer":"D"},

  {"id":59,"difficulty":"hard","question":"Two cards are drawn without replacement. Probability both are red?","options":{"A":"13/52 × 12/51","B":"26/52 × 25/51","C":"1/2","D":"3/52"},"correct_answer":"B"},

  {"id":60,"difficulty":"hard","question":"Probability of getting two even numbers when two dice are rolled?","options":{"A":"4/36","B":"6/36","C":"9/36","D":"12/36"},"correct_answer":"C"}
,
{"id":61,"difficulty":"easy","question":"Probability of getting a tail when a coin is tossed?","options":{"A":"0","B":"1","C":"1/2","D":"1/4"},"correct_answer":"C"},
  {"id":62,"difficulty":"easy","question":"Probability of getting 6 on a die?","options":{"A":"1/6","B":"1/3","C":"1/2","D":"1"},"correct_answer":"A"},
  {"id":63,"difficulty":"easy","question":"Probability of selecting red ball if all balls are red?","options":{"A":"0","B":"1/2","C":"1/4","D":"1"},"correct_answer":"D"},
  {"id":64,"difficulty":"easy","question":"Probability of choosing Sunday from days of week?","options":{"A":"1/5","B":"1/6","C":"1/7","D":"2/7"},"correct_answer":"C"},
  {"id":65,"difficulty":"easy","question":"Probability of selecting even number from {2,4,6,8}?","options":{"A":"1/2","B":"1/4","C":"3/4","D":"1"},"correct_answer":"D"},
  {"id":66,"difficulty":"easy","question":"Probability of getting odd number on a die?","options":{"A":"1/6","B":"1/2","C":"1/3","D":"2/3"},"correct_answer":"B"},
  {"id":67,"difficulty":"easy","question":"Probability of choosing consonant from word CAT?","options":{"A":"1/3","B":"2/3","C":"3/3","D":"0"},"correct_answer":"B"},
  {"id":68,"difficulty":"easy","question":"Probability of selecting number greater than 3 on die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"D"},
  {"id":69,"difficulty":"easy","question":"Probability of getting head or tail in coin toss?","options":{"A":"0","B":"1/2","C":"1","D":"2"},"correct_answer":"C"},
  {"id":70,"difficulty":"easy","question":"Probability of selecting vowel from word BUS?","options":{"A":"1/3","B":"2/3","C":"0","D":"1"},"correct_answer":"A"},
  {"id":71,"difficulty":"easy","question":"Probability of picking black card from deck?","options":{"A":"1/13","B":"1/4","C":"1/2","D":"3/4"},"correct_answer":"C"},
  {"id":72,"difficulty":"easy","question":"Probability of selecting prime from {2,5,7,9}?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"4/4"},"correct_answer":"C"},
  {"id":73,"difficulty":"easy","question":"Probability of selecting multiple of 2 from {1,2,3,4}?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"2/4"},"correct_answer":"B"},
  {"id":74,"difficulty":"easy","question":"Probability of drawing a heart card?","options":{"A":"1/4","B":"1/13","C":"4/52","D":"13/52"},"correct_answer":"A"},
  {"id":75,"difficulty":"easy","question":"Probability of selecting letter A from alphabet?","options":{"A":"1/13","B":"1/26","C":"2/26","D":"1"},"correct_answer":"B"},
  {"id":76,"difficulty":"easy","question":"Probability of selecting number 10 from 1–10?","options":{"A":"1/5","B":"1/10","C":"1/2","D":"1"},"correct_answer":"B"},
  {"id":77,"difficulty":"easy","question":"Probability of getting a number less than 7 on a die?","options":{"A":"1","B":"5/6","C":"4/6","D":"3/6"},"correct_answer":"A"},
 {"id":78,"difficulty":"easy","question":"Probability of selecting green ball if no green balls?","options":{"A":"0","B":"1","C":"1/2","D":"1/4"},"correct_answer":"A"},
  {"id":79,"difficulty":"easy","question":"Probability of choosing even number from {1,3,5,7}?","options":{"A":"0","B":"1/2","C":"1/4","D":"1"},"correct_answer":"A"},
   {"id":80,"difficulty":"easy","question":"Probability of getting head twice in one toss?","options":{"A":"0","B":"1/2","C":"1","D":"2"},"correct_answer":"A"},

  {"id":81,"difficulty":"medium","question":"Bag has 6 red, 4 blue balls. P(red)?","options":{"A":"2/5","B":"3/5","C":"4/5","D":"6/10"},"correct_answer":"B"},
  {"id":82,"difficulty":"medium","question":"Probability of selecting vowel from SCHOOL?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},
  {"id":83,"difficulty":"medium","question":"Die rolled. Probability of multiple of 3?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},
  {"id":84,"difficulty":"medium","question":"Probability of drawing red card from deck?","options":{"A":"1/4","B":"1/13","C":"1/2","D":"3/4"},"correct_answer":"C"},
  {"id":85,"difficulty":"medium","question":"Probability of selecting odd from 1–20?","options":{"A":"1/2","B":"1/4","C":"3/4","D":"2/5"},"correct_answer":"A"},
  {"id":86,"difficulty":"medium","question":"Two coins tossed. P(no head)?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"A"},
  {"id":87,"difficulty":"medium","question":"Probability of selecting consonant from MANGO?","options":{"A":"2/5","B":"3/5","C":"4/5","D":"1"},"correct_answer":"B"},
  {"id":88,"difficulty":"medium","question":"Bag has 5 white, 5 black balls. P(black)?","options":{"A":"1/10","B":"1/5","C":"1/2","D":"4/5"},"correct_answer":"C"},
  {"id":89,"difficulty":"medium","question":"Probability of number less than 5 on die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"D"},
 {"id":90,"difficulty":"medium","question":"Probability of selecting letter E from ELEPHANT?","options":{"A":"1/4","B":"2/8","C":"3/8","D":"4/8"},"correct_answer":"A"},
 {"id":91,"difficulty":"medium","question":"Bag has 2R,3B,5G balls. P(B)?","options":{"A":"1/10","B":"2/10","C":"3/10","D":"5/10"},"correct_answer":"C"},
  {"id":92,"difficulty":"medium","question":"Probability of composite number on die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},
  {"id":93,"difficulty":"medium","question":"Two coins tossed. P(at least one head)?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"C"},
  {"id":94,"difficulty":"medium","question":"Probability of selecting factor of 10 from 1–10?","options":{"A":"2/10","B":"3/10","C":"4/10","D":"5/10"},"correct_answer":"D"},
  {"id":95,"difficulty":"medium","question":"Probability of drawing king or queen?","options":{"A":"2/52","B":"4/52","C":"8/52","D":"12/52"},"correct_answer":"C"},
  {"id":96,"difficulty":"medium","question":"Probability of vowel from PROBABILITY?","options":{"A":"3/11","B":"4/11","C":"5/11","D":"6/11"},"correct_answer":"B"},
  {"id":97,"difficulty":"medium","question":"Die rolled. P(number is prime)?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"C"},
  {"id":98,"difficulty":"medium","question":"Bag has 7 red, 3 blue. P(not red)?","options":{"A":"3/10","B":"7/10","C":"1/10","D":"9/10"},"correct_answer":"A"},
  {"id":99,"difficulty":"medium","question":"Probability of letter A from DATA?","options":{"A":"1/4","B":"2/4","C":"3/4","D":"4/4"},"correct_answer":"B"},
  {"id":100,"difficulty":"medium","question":"Probability of getting tail twice in two tosses?","options":{"A":"1/2","B":"1/4","C":"3/4","D":"1"},"correct_answer":"B"},

  {"id":101,"difficulty":"medium","question":"Probability of number divisible by 4 from 1–20?","options":{"A":"1/4","B":"1/5","C":"1/10","D":"2/5"},"correct_answer":"B"},
 {"id":102,"difficulty":"medium","question":"Bag has 3R,7B balls. P(R or B)?","options":{"A":"3/10","B":"7/10","C":"1","D":"9/10"},"correct_answer":"C"},
  {"id":103,"difficulty":"medium","question":"Probability of selecting square number from 1–9?","options":{"A":"1/3","B":"2/3","C":"3/9","D":"4/9"},"correct_answer":"A"},
  {"id":104,"difficulty":"medium","question":"Probability of selecting consonant from TIGER?","options":{"A":"2/5","B":"3/5","C":"4/5","D":"5/5"},"correct_answer":"B"},
  {"id":105,"difficulty":"medium","question":"Two dice rolled. P(sum = 8)?","options":{"A":"3/36","B":"4/36","C":"5/36","D":"6/36"},"correct_answer":"C"},
  {"id":106,"difficulty":"medium","question":"Probability of red card or black card?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"D"},
  {"id":107,"difficulty":"medium","question":"Probability of odd number from 1–15?","options":{"A":"5/15","B":"7/15","C":"8/15","D":"10/15"},"correct_answer":"C"},
  {"id":108,"difficulty":"medium","question":"Probability of selecting a factor of 15 from 1–15?","options":{"A":"3/15","B":"4/15","C":"5/15","D":"6/15"},"correct_answer":"B"},

  {"id":109,"difficulty":"medium","question":"Probability of selecting a vowel from EDUCATION?","options":{"A":"4/9","B":"5/9","C":"6/9","D":"7/9"},"correct_answer":"B"},
 {"id":110,"difficulty":"medium","question":"Probability of rolling non-prime on die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},

  {"id":111,"difficulty":"medium","question":"Bag has 8 red, 2 blue balls. P(blue)?","options":{"A":"1/10","B":"2/10","C":"3/10","D":"4/10"},"correct_answer":"B"},
  {"id":112,"difficulty":"medium","question":"Probability of selecting letter S from MISSISSIPPI?","options":{"A":"3/11","B":"4/11","C":"5/11","D":"6/11"},"correct_answer":"B"},
 {"id":113,"difficulty":"medium","question":"Probability of number < 4 on die?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"C"},
  {"id":114,"difficulty":"medium","question":"Two coins tossed. P(both tails)?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"A"},
   {"id":115,"difficulty":"medium","question":"Probability of selecting a consonant from MATHS?","options":{"A":"2/5","B":"3/5","C":"4/5","D":"1"},"correct_answer":"C"},
 {"id":116,"difficulty":"medium","question":"Probability of drawing spade from deck?","options":{"A":"1/13","B":"1/4","C":"1/2","D":"3/4"},"correct_answer":"B"},
  {"id":117,"difficulty":"medium","question":"Probability of selecting odd from {2,4,6,8}?","options":{"A":"0","B":"1/2","C":"1/4","D":"1"},"correct_answer":"A"},
  {"id":118,"difficulty":"medium","question":"Bag has 4 red, 6 blue balls. P(not blue)?","options":{"A":"2/5","B":"3/5","C":"4/5","D":"6/10"},"correct_answer":"A"},
  {"id":119,"difficulty":"medium","question":"Probability of letter O from SCHOOL?","options":{"A":"1/6","B":"2/6","C":"3/6","D":"4/6"},"correct_answer":"B"},
  {"id":120,"difficulty":"medium","question":"Probability of selecting a prime number from 10–20?","options":{"A":"3/11","B":"4/11","C":"5/11","D":"6/11"},"correct_answer":"B"},

  {"id":121,"difficulty":"medium","question":"Probability of selecting number divisible by 3 from 1–30?","options":{"A":"1/3","B":"1/5","C":"2/5","D":"1/10"},"correct_answer":"A"},
  {"id":122,"difficulty":"medium","question":"Bag has 9 white, 1 black. P(black)?","options":{"A":"1/10","B":"1/9","C":"2/10","D":"9/10"},"correct_answer":"A"},
  {"id":123,"difficulty":"medium","question":"Probability of vowel from ALGEBRA?","options":{"A":"2/7","B":"3/7","C":"4/7","D":"5/7"},"correct_answer":"B"},
  {"id":124,"difficulty":"medium","question":"Two dice rolled. P(sum < 5)?","options":{"A":"3/36","B":"4/36","C":"5/36","D":"6/36"},"correct_answer":"A"},
  {"id":125,"difficulty":"medium","question":"Probability of drawing red king?","options":{"A":"1/52","B":"2/52","C":"4/52","D":"8/52"},"correct_answer":"B"},
   {"id":126,"difficulty":"medium","question":"Probability of number divisible by 6 from 1–24?","options":{"A":"1/6","B":"1/4","C":"1/3","D":"1/12"},"correct_answer":"A"},
 {"id":127,"difficulty":"medium","question":"Bag has 5R,5B,5G balls. P(G)?","options":{"A":"1/5","B":"1/3","C":"2/3","D":"3/5"},"correct_answer":"B"},
  {"id":128,"difficulty":"medium","question":"Probability of selecting consonant from INDIA?","options":{"A":"2/5","B":"3/5","C":"4/5","D":"1"},"correct_answer":"B"},
  {"id":129,"difficulty":"medium","question":"Probability of rolling even number twice?","options":{"A":"1/6","B":"1/4","C":"1/3","D":"1/2"},"correct_answer":"B"},
  {"id":130,"difficulty":"medium","question":"Probability of letter T from STATISTICS?","options":{"A":"2/10","B":"3/10","C":"4/10","D":"5/10"},"correct_answer":"C"},

  {"id":131,"difficulty":"hard","question":"Two dice rolled. P(sum = 11)?","options":{"A":"1/36","B":"2/36","C":"3/36","D":"4/36"},"correct_answer":"B"},
  {"id":132,"difficulty":"hard","question":"Three coins tossed. P(exactly two heads)?","options":{"A":"1/8","B":"2/8","C":"3/8","D":"4/8"},"correct_answer":"C"},
  {"id":133,"difficulty":"hard","question":"Deck: P(face card)?","options":{"A":"3/52","B":"6/52","C":"12/52","D":"16/52"},"correct_answer":"C"},
  {"id":134,"difficulty":"hard","question":"Bag: 5R,4B,3G. P(B or G)?","options":{"A":"4/12","B":"5/12","C":"7/12","D":"9/12"},"correct_answer":"C"},
  {"id":135,"difficulty":"hard","question":"Two dice. P(at least one 6)?","options":{"A":"5/36","B":"11/36","C":"12/36","D":"30/36"},"correct_answer":"B"},
  {"id":136,"difficulty":"hard","question":"Probability of two odd numbers on dice?","options":{"A":"1/4","B":"1/3","C":"1/2","D":"2/3"},"correct_answer":"A"},
  {"id":137,"difficulty":"hard","question":"Two cards drawn. P(both aces)?","options":{"A":"1/221","B":"2/221","C":"3/221","D":"4/221"},"correct_answer":"A"},
  {"id":138,"difficulty":"hard","question":"Three coins tossed. P(at least one tail)?","options":{"A":"1/8","B":"3/8","C":"7/8","D":"1"},"correct_answer":"C"},
  {"id":139,"difficulty":"hard","question":"Bag: 6R,4B. Two drawn. P(both red)?","options":{"A":"1/5","B":"1/3","C":"1/2","D":"2/3"},"correct_answer":"B"},
 {"id":140,"difficulty":"hard","question":"Two dice are rolled. Probability that the sum is a prime number?","options":{"A":"10/36","B":"12/36","C":"15/36","D":"18/36"},"correct_answer":"C"},
 {"id":141,"difficulty":"hard","question":"Probability of drawing non-face card?","options":{"A":"12/52","B":"36/52","C":"40/52","D":"48/52"},"correct_answer":"B"},
  {"id":142,"difficulty":"hard","question":"Two coins tossed. P(both same)?","options":{"A":"1/4","B":"1/2","C":"3/4","D":"1"},"correct_answer":"B"},
  {"id":143,"difficulty":"hard","question":"Bag: 8W,2B. Two drawn. P(at least one B)?","options":{"A":"2/45","B":"4/45","C":"16/45","D":"28/45"},"correct_answer":"C"},
  {"id":144,"difficulty":"hard","question":"Two dice. P(sum divisible by 3)?","options":{"A":"10/36","B":"12/36","C":"15/36","D":"18/36"},"correct_answer":"B"},
  {"id":145,"difficulty":"hard","question":"Three coins tossed. P(no head)?","options":{"A":"1/8","B":"2/8","C":"3/8","D":"4/8"},"correct_answer":"A"},
  {"id":146,"difficulty":"hard","question":"Deck: P(red ace)?","options":{"A":"1/26","B":"1/52","C":"2/52","D":"4/52"},"correct_answer":"C"},
  {"id":147,"difficulty":"hard","question":"Two dice are rolled. Probability that the sum is a multiple of 4?","options":{"A":"6/36","B":"8/36","C":"9/36","D":"12/36"},"correct_answer":"C"}
, {"id":148,"difficulty":"hard","question":"Bag: 3R,5B,7G. P(neither R nor B)?","options":{"A":"3/15","B":"5/15","C":"7/15","D":"10/15"},"correct_answer":"C"},
  {"id":149,"difficulty":"hard","question":"Probability of drawing 2 cards both black?","options":{"A":"1/13","B":"25/102","C":"26/102","D":"13/51"},"correct_answer":"B"},
  {"id":150,"difficulty":"hard","question":"Two dice rolled. P(sum = 12)?","options":{"A":"1/36","B":"2/36","C":"3/36","D":"4/36"},"correct_answer":"A"}

  ]
}