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    Question

    Find the next term in the series: 3, 10, 21, 36,

    55, ?
    A 38 Correct Answer Incorrect Answer
    B 59 Correct Answer Incorrect Answer
    C 78 Correct Answer Incorrect Answer
    D 67 Correct Answer Incorrect Answer

    Solution

    Find differences: 10 − 3 = 7 21 − 10 = 11 36 − 21 = 15 55 − 36 = 19 Differences: 7, 11, 15, 19 → each increases by 4. Next difference = 19 + 4 = 23 Next term = 55 + 23 = 78 Answer: 78.

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