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    Question

    117, 117, 121, 129, 141,

    ? What will come in place of the question mark (?) in the following series?
    A 145 Correct Answer Incorrect Answer
    B 165 Correct Answer Incorrect Answer
    C 155 Correct Answer Incorrect Answer
    D 147 Correct Answer Incorrect Answer
    E 157 Correct Answer Incorrect Answer

    Solution

    ATQ, 117 + 0 = 117 117 + 4 = 121 121 + 8 = 129 129 + 12 = 141 141 + 16 = 157

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