{
  "title": "Expressions with Variables (Algebra) - Grade 6 CBSE",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "What is the value of 3x + 2 when x = 1?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 2, "difficulty": "easy", "question": "If y = 4, what is 2y - 1?", "options": {"A": "5", "B": "6", "C": "7", "D": "8"}, "correct_answer": "C"},
    {"id": 3, "difficulty": "easy", "question": "What is 5p when p = 3?", "options": {"A": "12", "B": "15", "C": "18", "D": "20"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "If a = 2, what is 4a + 3?", "options": {"A": "9", "B": "10", "C": "11", "D": "12"}, "correct_answer": "C"},
    {"id": 5, "difficulty": "easy", "question": "What is 7 - m when m = 2?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 6, "difficulty": "easy", "question": "If n = 5, what is 3n + 4?", "options": {"A": "17", "B": "18", "C": "19", "D": "20"}, "correct_answer": "C"},
    {"id": 7, "difficulty": "easy", "question": "What is 2k - 1 when k = 4?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "If x = 6, what is x ÷ 2?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "B"},
    {"id": 9, "difficulty": "easy", "question": "What is 9 - 2t when t = 2?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 10, "difficulty": "easy", "question": "If b = 3, what is 5b ÷ 3?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 11, "difficulty": "easy", "question": "What is 4x + x when x = 2?", "options": {"A": "8", "B": "9", "C": "10", "D": "11"}, "correct_answer": "C"},
    {"id": 12, "difficulty": "easy", "question": "If y = 7, what is y - 3?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "What is 6m when m = 0.5?", "options": {"A": "2", "B": "2.5", "C": "3", "D": "3.5"}, "correct_answer": "C"},
    {"id": 14, "difficulty": "easy", "question": "If p = 10, what is p ÷ 5?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "What is 8 - 3n when n = 1?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 16, "difficulty": "easy", "question": "If a = 4, what is 3a - 2?", "options": {"A": "8", "B": "9", "C": "10", "D": "11"}, "correct_answer": "C"},
    {"id": 17, "difficulty": "easy", "question": "What is 5 + 2k when k = 1.5?", "options": {"A": "7", "B": "7.5", "C": "8", "D": "8.5"}, "correct_answer": "C"},
    {"id": 18, "difficulty": "easy", "question": "If x = 8, what is x ÷ 4?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "What is 12 - 4t when t = 2?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "C"},
    {"id": 20, "difficulty": "easy", "question": "If b = 6, what is 2b ÷ 3?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "B"},
    {"id": 21, "difficulty": "medium", "question": "Simplify: 3x + 5 + 2x - 3", "options": {"A": "5x + 2", "B": "5x + 8", "C": "x + 2", "D": "5x - 2"}, "correct_answer": "A"},
    {"id": 22, "difficulty": "medium", "question": "If a = 3 and b = 2, what is 4a - 2b?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 23, "difficulty": "medium", "question": "Simplify: 7y - 3y + 2y", "options": {"A": "6y", "B": "5y", "C": "4y", "D": "3y"}, "correct_answer": "A"},
    {"id": 24, "difficulty": "medium", "question": "What is the value of 2(x + 3) when x = 4?", "options": {"A": "10", "B": "12", "C": "14", "D": "16"}, "correct_answer": "C"},
    {"id": 25, "difficulty": "medium", "question": "If m = 5 and n = 3, what is 2m + 3n?", "options": {"A": "16", "B": "17", "C": "18", "D": "19"}, "correct_answer": "D"},
    {"id": 26, "difficulty": "medium", "question": "Simplify: 4p - 2p + 5p", "options": {"A": "6p", "B": "7p", "C": "8p", "D": "9p"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "What is 3(2x - 1) when x = 2?", "options": {"A": "9", "B": "10", "C": "11", "D": "12"}, "correct_answer": "A"},
    {"id": 28, "difficulty": "medium", "question": "If x = 4 and y = 1, what is 5x - 3y?", "options": {"A": "15", "B": "16", "C": "17", "D": "18"}, "correct_answer": "C"},
    {"id": 29, "difficulty": "medium", "question": "Simplify: 6a + 2b - 3a + b", "options": {"A": "3a + 3b", "B": "9a + 3b", "C": "3a + b", "D": "9a + b"}, "correct_answer": "A"},
    {"id": 30, "difficulty": "medium", "question": "What is 2y² when y = 3?", "options": {"A": "12", "B": "15", "C": "18", "D": "21"}, "correct_answer": "C"},
    {"id": 31, "difficulty": "medium", "question": "If p = 2 and q = 4, what is 3p + 2q?", "options": {"A": "12", "B": "13", "C": "14", "D": "15"}, "correct_answer": "C"},
    {"id": 32, "difficulty": "medium", "question": "Simplify: 8x - 3x + 2x - x", "options": {"A": "5x", "B": "6x", "C": "7x", "D": "8x"}, "correct_answer": "B"},
    {"id": 33, "difficulty": "medium", "question": "What is 4(3 - x) when x = 1?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 34, "difficulty": "medium", "question": "If a = 6, b = 2, what is a² - b²?", "options": {"A": "30", "B": "32", "C": "34", "D": "36"}, "correct_answer": "B"},
    {"id": 35, "difficulty": "medium", "question": "Simplify: 5m + 3n - 2m + n", "options": {"A": "3m + 4n", "B": "7m + 4n", "C": "3m + 2n", "D": "7m + 2n"}, "correct_answer": "A"},
    {"id": 36, "difficulty": "medium", "question": "What is ½(4x + 6) when x = 2?", "options": {"A": "5", "B": "6", "C": "7", "D": "8"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "If x = 3, y = 2, what is 2x² - y?", "options": {"A": "14", "B": "15", "C": "16", "D": "17"}, "correct_answer": "C"},
    {"id": 38, "difficulty": "medium", "question": "Simplify: 9a - 4a + a - 2a", "options": {"A": "3a", "B": "4a", "C": "5a", "D": "6a"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "What is 3(2y - 4) when y = 3?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 40, "difficulty": "medium", "question": "If m = 5, what is 2m² ÷ 5?", "options": {"A": "8", "B": "9", "C": "10", "D": "11"}, "correct_answer": "C"},
    {"id": 41, "difficulty": "medium", "question": "Simplify: 7x + 2y - 3x + 4y", "options": {"A": "4x + 6y", "B": "10x + 6y", "C": "4x + 2y", "D": "10x + 2y"}, "correct_answer": "A"},
    {"id": 42, "difficulty": "medium", "question": "What is (x + 3)(x - 1) when x = 4?", "options": {"A": "18", "B": "19", "C": "20", "D": "21"}, "correct_answer": "D"},
    {"id": 43, "difficulty": "medium", "question": "If a = 4, b = 3, what is 2a + 3b - a?", "options": {"A": "10", "B": "11", "C": "12", "D": "13"}, "correct_answer": "D"},
    {"id": 44, "difficulty": "medium", "question": "Simplify: 12p ÷ 3 + 2p", "options": {"A": "4p", "B": "5p", "C": "6p", "D": "7p"}, "correct_answer": "C"},
    {"id": 45, "difficulty": "medium", "question": "What is 5 - 2(x - 1) when x = 3?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "medium", "question": "If x = 2, y = 5, what is 3x + 2y - x?", "options": {"A": "10", "B": "11", "C": "12", "D": "13"}, "correct_answer": "C"},
    {"id": 47, "difficulty": "medium", "question": "Simplify: 15a ÷ 5 + 2a", "options": {"A": "3a", "B": "4a", "C": "5a", "D": "6a"}, "correct_answer": "C"},
    {"id": 48, "difficulty": "medium", "question": "What is x² + 2x + 1 when x = 3?", "options": {"A": "14", "B": "15", "C": "16", "D": "17"}, "correct_answer": "C"},
    {"id": 49, "difficulty": "medium", "question": "If m = 6, n = 2, what is (m + n)(m - n)?", "options": {"A": "30", "B": "32", "C": "34", "D": "36"}, "correct_answer": "B"},
    {"id": 50, "difficulty": "medium", "question": "Simplify: 8x - 2(3x - 1)", "options": {"A": "2x + 2", "B": "2x - 2", "C": "14x + 2", "D": "14x - 2"}, "correct_answer": "A"},
    {"id": 51, "difficulty": "medium", "question": "What is 3a² when a = 2?", "options": {"A": "10", "B": "11", "C": "12", "D": "13"}, "correct_answer": "C"},
    {"id": 52, "difficulty": "medium", "question": "If x = 5, what is 4x - 2(x + 1)?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 53, "difficulty": "medium", "question": "Simplify: 6y + 4 - 2y - 1", "options": {"A": "4y + 3", "B": "8y + 3", "C": "4y + 5", "D": "8y + 5"}, "correct_answer": "A"},
    {"id": 54, "difficulty": "medium", "question": "What is 2(3x - 1) + 4 when x = 2?", "options": {"A": "12", "B": "13", "C": "14", "D": "15"}, "correct_answer": "C"},
    {"id": 55, "difficulty": "medium", "question": "If p = 7, q = 3, what is p² - q²?", "options": {"A": "38", "B": "39", "C": "40", "D": "41"}, "correct_answer": "C"},
    {"id": 56, "difficulty": "medium", "question": "Simplify: 9a - 3a + 2a - 4a", "options": {"A": "3a", "B": "4a", "C": "5a", "D": "6a"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "medium", "question": "What is ½(8x - 4) when x = 3?", "options": {"A": "8", "B": "9", "C": "10", "D": "11"}, "correct_answer": "C"},
    {"id": 58, "difficulty": "medium", "question": "If x = 4, y = 2, what is 3x² ÷ y?", "options": {"A": "22", "B": "23", "C": "24", "D": "25"}, "correct_answer": "C"},
    {"id": 59, "difficulty": "medium", "question": "Simplify: 5(x + 2) - 3x", "options": {"A": "2x + 10", "B": "8x + 10", "C": "2x + 2", "D": "8x + 2"}, "correct_answer": "A"},
    {"id": 60, "difficulty": "medium", "question": "What is 4a - 2b when a = 5, b = 3?", "options": {"A": "12", "B": "13", "C": "14", "D": "15"}, "correct_answer": "C"},
    {"id": 61, "difficulty": "medium", "question": "If m = 8, what is 3m ÷ 4 + 2?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 62, "difficulty": "medium", "question": "Simplify: 7x - 2y + 3x + 4y", "options": {"A": "10x + 2y", "B": "4x + 2y", "C": "10x + 6y", "D": "4x + 6y"}, "correct_answer": "A"},
    {"id": 63, "difficulty": "medium", "question": "What is (x + 2)² when x = 3?", "options": {"A": "23", "B": "24", "C": "25", "D": "26"}, "correct_answer": "C"},
    {"id": 64, "difficulty": "medium", "question": "If a = 9, b = 4, what is √a + b?", "options": {"A": "5", "B": "6", "C": "7", "D": "8"}, "correct_answer": "C"},
    {"id": 65, "difficulty": "medium", "question": "Simplify: 12a ÷ 4 + 3a", "options": {"A": "4a", "B": "5a", "C": "6a", "D": "7a"}, "correct_answer": "C"},
    {"id": 66, "difficulty": "medium", "question": "What is 6 - 3(2 - x) when x = 1?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "A"},
    {"id": 67, "difficulty": "medium", "question": "If x = 6, y = 3, what is 4x ÷ y - 2?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 68, "difficulty": "medium", "question": "Simplify: 8p - 3q + 2p - q", "options": {"A": "10p - 4q", "B": "6p - 4q", "C": "10p - 2q", "D": "6p - 2q"}, "correct_answer": "A"},
    {"id": 69, "difficulty": "medium", "question": "What is x³ when x = 2?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 70, "difficulty": "medium", "question": "If m = 10, n = 2, what is (m + n) ÷ 3?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "B"},
    {"id": 71, "difficulty": "medium", "question": "Simplify: 5(2x - 1) - 3x", "options": {"A": "7x - 5", "B": "7x + 5", "C": "13x - 5", "D": "13x + 5"}, "correct_answer": "A"},
    {"id": 72, "difficulty": "medium", "question": "What is 2a² + 3a when a = 2?", "options": {"A": "12", "B": "13", "C": "14", "D": "15"}, "correct_answer": "C"},
    {"id": 73, "difficulty": "medium", "question": "If x = 7, y = 2, what is 3x - 2y + x?", "options": {"A": "19", "B": "20", "C": "21", "D": "22"}, "correct_answer": "C"},
    {"id": 74, "difficulty": "medium", "question": "Simplify: 18x ÷ 6 + 2x", "options": {"A": "3x", "B": "4x", "C": "5x", "D": "6x"}, "correct_answer": "C"},
    {"id": 75, "difficulty": "medium", "question": "What is 4(3 - 2x) when x = 0.5?", "options": {"A": "6", "B": "7", "C": "8", "D": "9"}, "correct_answer": "C"},
    {"id": 76, "difficulty": "medium", "question": "If a = 12, b = 3, what is a ÷ b + 2?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 77, "difficulty": "medium", "question": "Simplify: 6a + 4b - 2a - b", "options": {"A": "4a + 3b", "B": "8a + 3b", "C": "4a + 5b", "D": "8a + 5b"}, "correct_answer": "A"},
    {"id": 78, "difficulty": "medium", "question": "What is (x - 1)(x + 3) when x = 4?", "options": {"A": "19", "B": "20", "C": "21", "D": "22"}, "correct_answer": "C"},
    {"id": 79, "difficulty": "medium", "question": "If m = 15, what is m ÷ 5 + 3?", "options": {"A": "5", "B": "6", "C": "7", "D": "8"}, "correct_answer": "B"},
    {"id": 80, "difficulty": "medium", "question": "Simplify: 9x - 4(2x - 1)", "options": {"A": "x + 4", "B": "x - 4", "C": "17x + 4", "D": "17x - 4"}, "correct_answer": "A"},
    {"id": 81, "difficulty": "hard", "question": "If 3x + 2y = 20 and x = 4, what is y?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "C"},
    {"id": 82, "difficulty": "hard", "question": "Simplify: 2(x + 3y) - 3(2x - y)", "options": {"A": "-4x + 9y", "B": "4x + 9y", "C": "-4x + 3y", "D": "4x + 3y"}, "correct_answer": "A"},
    {"id": 83, "difficulty": "hard", "question": "If 2a + 3b = 23 and a = 4, what is b?", "options": {"A": "3", "B": "4", "C": "5", "D": "6"}, "correct_answer": "C"},
    {"id": 84, "difficulty": "hard", "question": "Simplify: 4(2x - 3y) + 3(x + 2y)", "options": {"A": "11x - 6y", "B": "11x + 6y", "C": "5x - 6y", "D": "5x + 6y"}, "correct_answer": "A"},
    {"id": 85, "difficulty": "hard", "question": "If 5m - 2n = 16 and m = 4, what is n?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 86, "difficulty": "hard", "question": "Simplify: 3(2a - b) - 2(a - 3b)", "options": {"A": "4a + 3b", "B": "4a - 3b", "C": "8a + 3b", "D": "8a - 3b"}, "correct_answer": "A"},
    {"id": 87, "difficulty": "hard", "question": "If 4x + y = 18 and x = 3, what is y?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 88, "difficulty": "hard", "question": "Simplify: 5(3p - 2q) - 3(2p - q)", "options": {"A": "9p - 7q", "B": "9p + 7q", "C": "21p - 7q", "D": "21p + 7q"}, "correct_answer": "A"},
    {"id": 89, "difficulty": "hard", "question": "If 3a + 4b = 26 and a = 2, what is b?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "B"},
    {"id": 90, "difficulty": "hard", "question": "Simplify: 2(4x + 3y) - 3(x - 2y)", "options": {"A": "5x + 12y", "B": "11x + 12y", "C": "5x", "D": "11x"}, "correct_answer": "A"},
    {"id": 91, "difficulty": "hard", "question": "If 6m - 3n = 21 and m = 5, what is n?", "options": {"A": "2", "B": "3", "C": "4", "D": "5"}, "correct_answer": "B"},
    {"id": 92, "difficulty": "hard", "question": "Simplify: 4(2a - b) + 2(3a + 2b)", "options": {"A": "14a", "B": "14a + 2b", "C": "2a", "D": "2a + 2b"}, "correct_answer": "A"},
    {"id": 93, "difficulty": "hard", "question": "If 7x + 2y = 32 and x = 4, what is y?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 94, "difficulty": "hard", "question": "Simplify: 3(4p - 2q) - 2(3p - q)", "options": {"A": "6p - 4q", "B": "6p + 4q", "C": "18p - 4q", "D": "18p + 4q"}, "correct_answer": "A"},
    {"id": 95, "difficulty": "hard", "question": "If 5a + 3b = 29 and a = 4, what is b?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "C"},
    {"id": 96, "difficulty": "hard", "question": "Simplify: 2(3x + 4y) + 3(2x - y)", "options": {"A": "12x + 5y", "B": "12x - 5y", "C": "6x + 5y", "D": "6x - 5y"}, "correct_answer": "A"},
    {"id": 97, "difficulty": "hard", "question": "If 4m - 5n = 7 and m = 3, what is n?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "A"},
    {"id": 98, "difficulty": "hard", "question": "Simplify: 5(2a - 3b) - 2(3a - 2b)", "options": {"A": "4a - 11b", "B": "4a + 11b", "C": "16a - 11b", "D": "16a + 11b"}, "correct_answer": "A"},
    {"id": 99, "difficulty": "hard", "question": "If 8x + 3y = 38 and x = 4, what is y?", "options": {"A": "1", "B": "2", "C": "3", "D": "4"}, "correct_answer": "B"},
    {"id": 100, "difficulty": "hard", "question": "Simplify: 3(5p - 2q) + 2(3p + q)", "options": {"A": "21p - 4q", "B": "21p + 4q", "C": "9p - 4q", "D": "9p + 4q"}, "correct_answer": "A"},
    {"id":101,"difficulty":"easy","question":"What is the value of 2x + 5 when x = 2?","options":{"A":"7","B":"8","C":"9","D":"10"},"correct_answer":"B"},
  {"id":102,"difficulty":"easy","question":"If a = 3, what is a + 7?","options":{"A":"9","B":"10","C":"11","D":"12"},"correct_answer":"B"},
  {"id":103,"difficulty":"easy","question":"What is 6m when m = 2?","options":{"A":"10","B":"11","C":"12","D":"13"},"correct_answer":"C"},
  {"id":104,"difficulty":"easy","question":"If x = 5, what is x − 2?","options":{"A":"2","B":"3","C":"4","D":"5"},"correct_answer":"B"},
  {"id":105,"difficulty":"easy","question":"What is 4y when y = 1.5?","options":{"A":"5","B":"6","C":"7","D":"8"},"correct_answer":"B"},
  {"id":106,"difficulty":"easy","question":"If p = 9, what is p ÷ 3?","options":{"A":"2","B":"3","C":"4","D":"5"},"correct_answer":"B"},
  {"id":107,"difficulty":"easy","question":"What is 10 − n when n = 4?","options":{"A":"5","B":"6","C":"7","D":"8"},"correct_answer":"B"},
  {"id":108,"difficulty":"easy","question":"If k = 6, what is 2k?","options":{"A":"10","B":"11","C":"12","D":"13"},"correct_answer":"C"},
  {"id":109,"difficulty":"easy","question":"What is x ÷ 5 when x = 20?","options":{"A":"3","B":"4","C":"5","D":"6"},"correct_answer":"B"},
  {"id":110,"difficulty":"easy","question":"If b = 8, what is b − 3?","options":{"A":"4","B":"5","C":"6","D":"7"},"correct_answer":"B"},
  {"id":111,"difficulty":"easy","question":"What is 3a when a = 4?","options":{"A":"10","B":"11","C":"12","D":"13"},"correct_answer":"C"},
  {"id":112,"difficulty":"easy","question":"If y = 10, what is y ÷ 2?","options":{"A":"4","B":"5","C":"6","D":"7"},"correct_answer":"B"},
  {"id":113,"difficulty":"easy","question":"What is 7 + x when x = 5?","options":{"A":"11","B":"12","C":"13","D":"14"},"correct_answer":"B"},
  {"id":114,"difficulty":"easy","question":"If m = 3, what is 5m?","options":{"A":"13","B":"14","C":"15","D":"16"},"correct_answer":"C"},
  {"id":115,"difficulty":"easy","question":"What is 18 ÷ a when a = 3?","options":{"A":"5","B":"6","C":"7","D":"8"},"correct_answer":"B"},
  {"id":116,"difficulty":"easy","question":"If x = 9, what is x − 4?","options":{"A":"4","B":"5","C":"6","D":"7"},"correct_answer":"B"},
  {"id":117,"difficulty":"easy","question":"What is 2p + 1 when p = 3?","options":{"A":"6","B":"7","C":"8","D":"9"},"correct_answer":"B"},
  {"id":118,"difficulty":"easy","question":"If n = 7, what is n ÷ 7?","options":{"A":"0","B":"1","C":"2","D":"3"},"correct_answer":"B"},
  {"id":119,"difficulty":"easy","question":"What is 6 + y when y = 4?","options":{"A":"9","B":"10","C":"11","D":"12"},"correct_answer":"B"},
  {"id":120,"difficulty":"easy","question":"If a = 5, what is 2a − 3?","options":{"A":"6","B":"7","C":"8","D":"9"},"correct_answer":"B"},

  {"id":121,"difficulty":"medium","question":"Simplify: 4x + 3 − x","options":{"A":"3x + 3","B":"4x + 3","C":"x + 3","D":"3x − 3"},"correct_answer":"A"},
  {"id":122,"difficulty":"medium","question":"If a = 5 and b = 2, what is 3a − b?","options":{"A":"12","B":"13","C":"14","D":"15"},"correct_answer":"B"},
  {"id":123,"difficulty":"medium","question":"Simplify: 6y − 2 + y","options":{"A":"6y − 2","B":"7y − 2","C":"8y − 2","D":"7y + 2"},"correct_answer":"B"},
  {"id":124,"difficulty":"medium","question":"What is 2(x − 1) when x = 6?","options":{"A":"8","B":"9","C":"10","D":"11"},"correct_answer":"C"},
  {"id":125,"difficulty":"medium","question":"If m = 4 and n = 5, what is m + 2n?","options":{"A":"12","B":"13","C":"14","D":"15"},"correct_answer":"C"},
  {"id":126,"difficulty":"medium","question":"Simplify: 9a − 5a + 2","options":{"A":"4a","B":"4a + 2","C":"6a + 2","D":"14a"},"correct_answer":"B"},
  {"id":127,"difficulty":"medium","question":"What is 3(2x + 1) when x = 3?","options":{"A":"18","B":"19","C":"20","D":"21"},"correct_answer":"B"},
  {"id":128,"difficulty":"medium","question":"If x = 4, y = 3, what is 2x + y?","options":{"A":"10","B":"11","C":"12","D":"13"},"correct_answer":"B"},
  {"id":129,"difficulty":"medium","question":"Simplify: 5p − 2p + 4","options":{"A":"3p","B":"3p + 4","C":"7p","D":"7p + 4"},"correct_answer":"B"},
  {"id":130,"difficulty":"medium","question":"What is (x + 4) when x = 7?","options":{"A":"10","B":"11","C":"12","D":"13"},"correct_answer":"B"},

  {"id":131,"difficulty":"hard","question":"If 2x + y = 17 and x = 6, what is y?","options":{"A":"4","B":"5","C":"6","D":"7"},"correct_answer":"B"},
  {"id":132,"difficulty":"hard","question":"Simplify: 3(x − 2y) − 2(x + y)","options":{"A":"x − 8y","B":"x − 4y","C":"5x − 8y","D":"5x − 4y"},"correct_answer":"A"},
  {"id":133,"difficulty":"hard","question":"If 4a + b = 21 and a = 5, what is b?","options":{"A":"1","B":"2","C":"3","D":"4"},"correct_answer":"D"},
  {"id":134,"difficulty":"hard","question":"Simplify: 5(2p + q) − 3(p − q)","options":{"A":"7p + 8q","B":"7p + 2q","C":"13p + 8q","D":"13p + 2q"},"correct_answer":"A"},
  {"id":135,"difficulty":"hard","question":"If 6m − n = 29 and m = 5, what is n?","options":{"A":"1","B":"2","C":"3","D":"4"},"correct_answer":"D"},
  {"id":136,"difficulty":"hard","question":"Simplify: 4(a − 2b) + 3(2a + b)","options":{"A":"10a − 5b","B":"10a + 5b","C":"2a − 5b","D":"2a + 5b"},"correct_answer":"A"},
  {"id":137,"difficulty":"hard","question":"If 5x + y = 26 and x = 4, what is y?","options":{"A":"4","B":"5","C":"6","D":"7"},"correct_answer":"C"},
  {"id":138,"difficulty":"hard","question":"Simplify: 6(3p − q) − 2(2p + q)","options":{"A":"14p − 8q","B":"14p + 8q","C":"10p − 8q","D":"10p + 8q"},"correct_answer":"A"},
  {"id":139,"difficulty":"hard","question":"If 7a − 2b = 23 and a = 5, what is b?","options":{"A":"3","B":"4","C":"5","D":"6"},"correct_answer":"B"},
  {"id":140,"difficulty":"hard","question":"Simplify: 3(4x + y) − 5(x − 2y)","options":{"A":"7x + 13y","B":"7x − 13y","C":"17x + 13y","D":"17x − 13y"},"correct_answer":"A"},
  {"id":141,"difficulty":"hard","question":"If 9m + n = 47 and m = 5, what is n?","options":{"A":"1","B":"2","C":"3","D":"4"},"correct_answer":"D"},
  {"id":142,"difficulty":"hard","question":"Simplify: 2(5a − 3b) + 4(a + b)","options":{"A":"14a − 2b","B":"14a + 2b","C":"6a − 2b","D":"6a + 2b"},"correct_answer":"A"},
  {"id":143,"difficulty":"hard","question":"If 8x − y = 29 and x = 4, what is y?","options":{"A":"1","B":"2","C":"3","D":"4"},"correct_answer":"D"},
  {"id":144,"difficulty":"hard","question":"Simplify: 7(p + 2q) − 3(2p − q)","options":{"A":"p + 17q","B":"p − 17q","C":"13p + 17q","D":"13p − 17q"},"correct_answer":"A"},
  {"id":145,"difficulty":"hard","question":"If 5a + 4b = 38 and a = 6, what is b?","options":{"A":"1","B":"2","C":"3","D":"4"},"correct_answer":"C"},
  {"id":146,"difficulty":"hard","question":"Simplify: 4(3x − 2y) − (5x − y)","options":{"A":"7x − 7y","B":"7x + 7y","C":"17x − 7y","D":"17x + 7y"},"correct_answer":"A"},
  {"id":147,"difficulty":"hard","question":"If 6m + 2n = 30 and m = 4, what is n?","options":{"A":"2","B":"3","C":"4","D":"5"},"correct_answer":"B"},
  {"id":148,"difficulty":"hard","question":"Simplify: 5(a − 2b) − 3(a + b)","options":{"A":"2a − 13b","B":"2a + 13b","C":"8a − 13b","D":"8a + 13b"},"correct_answer":"A"},
  {"id":149,"difficulty":"hard","question":"If 10x − 3y = 31 and x = 4, what is y?","options":{"A":"2","B":"3","C":"4","D":"5"},"correct_answer":"B"},
  {"id":150,"difficulty":"hard","question":"Simplify: 2(4p + 3q) + 3(p − q)","options":{"A":"11p + 3q","B":"11p − 3q","C":"5p + 3q","D":"5p − 3q"},"correct_answer":"A"}

  ]
}