{
  "title": "Co-prime Numbers - Grade 5 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "Which pair is co-prime? 🔢",
      "options": { "A": "2, 4", "B": "3, 9", "C": "5, 7", "D": "6, 8" },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "Are 4 and 5 co-prime numbers?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Can't say" },
      "correct_answer": "A"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "Which of these is NOT a co-prime pair?",
      "options": { "A": "2, 3", "B": "8, 9", "C": "6, 9", "D": "7, 10" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "Co-prime numbers have HCF = ? 🎯",
      "options": { "A": "0", "B": "1", "C": "2", "D": "The larger number" },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "Are 9 and 10 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "Which pair is co-prime?",
      "options": { "A": "12, 15", "B": "14, 21", "C": "16, 25", "D": "18, 27" },
      "correct_answer": "C"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "Are 15 and 16 co-prime? 🔄",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Not sure" },
      "correct_answer": "A"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "Which pair has HCF = 1?",
      "options": { "A": "4, 6", "B": "9, 12", "C": "8, 10", "D": "11, 12" },
      "correct_answer": "D"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "Are 21 and 22 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "Which is NOT a co-prime pair? ❌",
      "options": { "A": "3, 4", "B": "5, 6", "C": "6, 8", "D": "7, 9" },
      "correct_answer": "C"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "Are 25 and 26 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot decide" },
      "correct_answer": "A"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "Which pair is co-prime?",
      "options": { "A": "10, 15", "B": "12, 18", "C": "13, 17", "D": "14, 16" },
      "correct_answer": "C"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "Are 27 and 28 co-prime? 🔢",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "No idea" },
      "correct_answer": "A"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "Which pair has HCF > 1?",
      "options": { "A": "8, 9", "B": "9, 10", "C": "10, 11", "D": "12, 15" },
      "correct_answer": "D"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "Are 33 and 34 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot tell" },
      "correct_answer": "A"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "Which pair is co-prime?",
      "options": { "A": "14, 35", "B": "15, 20", "C": "16, 81", "D": "18, 24" },
      "correct_answer": "C"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "Are 49 and 50 co-prime? 🎯",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "Which is NOT co-prime?",
      "options": { "A": "19, 20", "B": "20, 21", "C": "21, 22", "D": "22, 24" },
      "correct_answer": "D"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "Are 11 and 13 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "No idea" },
      "correct_answer": "A"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "Co-prime numbers must be prime numbers?",
      "options": { "A": "True", "B": "False", "C": "Sometimes", "D": "Always" },
      "correct_answer": "B"
    },

    {
      "id": 21,
      "difficulty": "medium",
      "question": "Which pair is co-prime? 🔍",
      "options": { "A": "24, 35", "B": "28, 42", "C": "36, 48", "D": "45, 60" },
      "correct_answer": "A"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "Are 51 and 52 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot say" },
      "correct_answer": "A"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "Which of these is a co-prime pair?",
      "options": { "A": "32, 48", "B": "33, 77", "C": "34, 51", "D": "35, 48" },
      "correct_answer": "D"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "Are 64 and 65 co-prime? 🔄",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "Which pair is NOT co-prime?",
      "options": { "A": "39, 40", "B": "41, 43", "C": "44, 45", "D": "46, 48" },
      "correct_answer": "D"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "Are 72 and 73 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Not sure" },
      "correct_answer": "A"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "Which pair has HCF = 1?",
      "options": { "A": "56, 63", "B": "60, 72", "C": "65, 78", "D": "66, 85" },
      "correct_answer": "D"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "Are 81 and 82 co-prime? 📊",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot decide" },
      "correct_answer": "A"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "Which is a co-prime pair?",
      "options": {
        "A": "84, 96",
        "B": "85, 102",
        "C": "86, 129",
        "D": "87, 88"
      },
      "correct_answer": "D"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "Are 95 and 96 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "Which pair is co-prime? 🎯",
      "options": {
        "A": "100, 125",
        "B": "101, 103",
        "C": "102, 119",
        "D": "104, 130"
      },
      "correct_answer": "B"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "Are 121 and 122 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "No idea" },
      "correct_answer": "A"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "Which is NOT a co-prime pair?",
      "options": {
        "A": "111, 112",
        "B": "112, 113",
        "C": "113, 114",
        "D": "114, 116"
      },
      "correct_answer": "D"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "Are 143 and 144 co-prime? 🔢",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot say" },
      "correct_answer": "A"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "Which pair is co-prime?",
      "options": {
        "A": "120, 150",
        "B": "125, 175",
        "C": "128, 256",
        "D": "129, 130"
      },
      "correct_answer": "D"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "Are 169 and 170 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "Which has HCF = 1? ❌",
      "options": {
        "A": "156, 182",
        "B": "165, 198",
        "C": "168, 189",
        "D": "171, 172"
      },
      "correct_answer": "D"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "Are 187 and 188 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Not sure" },
      "correct_answer": "A"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "Which pair is NOT co-prime? 🔄",
      "options": {
        "A": "192, 193",
        "B": "195, 196",
        "C": "196, 198",
        "D": "197, 199"
      },
      "correct_answer": "C"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "Are 221 and 222 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot decide" },
      "correct_answer": "A"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "Which of these is a co-prime pair? 🔍",
      "options": {
        "A": "231, 273",
        "B": "240, 288",
        "C": "247, 323",
        "D": "251, 272"
      },
      "correct_answer": "D"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "Are 255 and 256 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot say" },
      "correct_answer": "A"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "Which pair is co-prime? 🏆",
      "options": {
        "A": "272, 289",
        "B": "275, 350",
        "C": "279, 310",
        "D": "280, 281"
      },
      "correct_answer": "D"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "Are 299 and 300 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "Which is NOT a co-prime pair?",
      "options": {
        "A": "301, 302",
        "B": "303, 304",
        "C": "305, 306",
        "D": "306, 308"
      },
      "correct_answer": "D"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "Are 323 and 324 co-prime? 🔄",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "No idea" },
      "correct_answer": "A"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "Which pair has HCF = 1?",
      "options": {
        "A": "330, 385",
        "B": "336, 392",
        "C": "340, 425",
        "D": "341, 342"
      },
      "correct_answer": "D"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "Are 351 and 352 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Not sure" },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "Which pair is co-prime? 📊",
      "options": {
        "A": "360, 432",
        "B": "363, 484",
        "C": "364, 455",
        "D": "365, 366"
      },
      "correct_answer": "D"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "Are 399 and 400 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "Which is a co-prime pair? 🎯",
      "options": {
        "A": "408, 459",
        "B": "413, 531",
        "C": "420, 462",
        "D": "421, 422"
      },
      "correct_answer": "D"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "Are 437 and 438 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot decide" },
      "correct_answer": "A"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "Which pair is NOT co-prime? ❌",
      "options": {
        "A": "440, 441",
        "B": "441, 442",
        "C": "442, 444",
        "D": "443, 445"
      },
      "correct_answer": "C"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "Are 475 and 476 co-prime? 🔢",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "No idea" },
      "correct_answer": "A"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "Which pair is co-prime?",
      "options": {
        "A": "480, 540",
        "B": "483, 552",
        "C": "486, 567",
        "D": "487, 488"
      },
      "correct_answer": "D"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "Are 511 and 512 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Sometimes" },
      "correct_answer": "A"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "Which has HCF = 1? 🔄",
      "options": {
        "A": "520, 585",
        "B": "525, 630",
        "C": "528, 616",
        "D": "529, 530"
      },
      "correct_answer": "D"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "Are 551 and 552 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Not sure" },
      "correct_answer": "A"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "Which pair is co-prime? 🏆",
      "options": {
        "A": "560, 640",
        "B": "567, 648",
        "C": "570, 665",
        "D": "571, 572"
      },
      "correct_answer": "D"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "Are 589 and 590 co-prime?",
      "options": { "A": "Yes", "B": "No", "C": "Maybe", "D": "Cannot say" },
      "correct_answer": "A"
    }
  ]
}