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    Question

    Find the missing number in the following number series:

    21, 37, 73, 137, ?,

    381
    A 236 Correct Answer Incorrect Answer
    B 234 Correct Answer Incorrect Answer
    C 237 Correct Answer Incorrect Answer
    D 238 Correct Answer Incorrect Answer

    Solution

    21 + 42 = 37 37 + 62 = 73 73 + 82 = 137 137 + 102 = 237 237 + 122 = 381

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