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    Question

    Which number will replace the question mark (?) in the

    following series? 210, 215, ?, 231, 242, 255
    A 224 Correct Answer Incorrect Answer
    B 220 Correct Answer Incorrect Answer
    C 222 Correct Answer Incorrect Answer
    D 228 Correct Answer Incorrect Answer

    Solution

    The logic followed here is that the difference between consecutive terms increases by 2 for each subsequent step (adding consecutive odd numbers starting from 5). 210 + 5 = 215 215 + 7 = 222 222 + 9 = 231 231 + 11 = 242 242 + 13 = 255 The number 222 completes the sequence.

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