B Set 45 Unknown

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        "subject": "arithmetic",
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            "maxSum": 1000,
            "maxOperand": 1000,
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                "id": 1,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the hearts: How many are there? (25 hearts)",
                "answer": 25,
                "correctAnswer": "25",
                "difficulty": "normal"
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                "id": 2,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 5s: 25, 30, 35, 40, __",
                "answer": 45,
                "correctAnswer": "45",
                "difficulty": "normal"
            },
            {
                "id": 3,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 34, 36, __, 40, 42",
                "answer": 38,
                "correctAnswer": "38",
                "difficulty": "normal"
            },
            {
                "id": 4,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 2s: 16, 18, 20, 22, __",
                "answer": 24,
                "correctAnswer": "24",
                "difficulty": "normal"
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                "id": 5,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 2s: 36, 38, 40, 42, __",
                "answer": 44,
                "correctAnswer": "44",
                "difficulty": "normal"
            },
            {
                "id": 6,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the stars: How many are there? (91 stars)",
                "answer": 91,
                "correctAnswer": "91",
                "difficulty": "normal"
            },
            {
                "id": 7,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the stars: How many are there? (48 stars)",
                "answer": 48,
                "correctAnswer": "48",
                "difficulty": "normal"
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                "id": 8,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 25, 30, __, 40, 45",
                "answer": 35,
                "correctAnswer": "35",
                "difficulty": "normal"
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                "id": 9,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 3, 6, __, 12, 15",
                "answer": 9,
                "correctAnswer": "9",
                "difficulty": "normal"
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                "id": 10,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the triangles: How many are there? (41 triangles)",
                "answer": 41,
                "correctAnswer": "41",
                "difficulty": "normal"
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                "id": 11,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the stars: How many are there? (65 stars)",
                "answer": 65,
                "correctAnswer": "65",
                "difficulty": "normal"
            },
            {
                "id": 12,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the stars: How many are there? (68 stars)",
                "answer": 68,
                "correctAnswer": "68",
                "difficulty": "normal"
            },
            {
                "id": 13,
                "type": "counting",
                "subType": "what-comes-next",
                "question": "What comes after 25?",
                "answer": 26,
                "correctAnswer": "26",
                "difficulty": "normal"
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                "id": 14,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 2s: 34, 36, 38, 40, __",
                "answer": 42,
                "correctAnswer": "42",
                "difficulty": "normal"
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                "id": 15,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 2s: 2, 4, 6, 8, __",
                "answer": 10,
                "correctAnswer": "10",
                "difficulty": "normal"
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                "id": 16,
                "type": "counting",
                "subType": "what-comes-next",
                "question": "What comes after 37?",
                "answer": 38,
                "correctAnswer": "38",
                "difficulty": "normal"
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                "id": 17,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 10s: 30, 40, 50, 60, __",
                "answer": 70,
                "correctAnswer": "70",
                "difficulty": "normal"
            },
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                "id": 18,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 40, __, 50, 55, 60",
                "answer": 45,
                "correctAnswer": "45",
                "difficulty": "normal"
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            {
                "id": 19,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 2s: 28, 30, 32, 34, __",
                "answer": 36,
                "correctAnswer": "36",
                "difficulty": "normal"
            },
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                "id": 20,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 20, 30, __, 50, 60",
                "answer": 40,
                "correctAnswer": "40",
                "difficulty": "normal"
            }
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