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    Question

    What will come in place of the question mark (?) in the

    following series? 45, 54, 72, ?, 126, 162
    A 111 Correct Answer Incorrect Answer
    B 99 Correct Answer Incorrect Answer
    C 87 Correct Answer Incorrect Answer
    D 69 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Here, the pattern involves adding multiples of 9 sequentially to each number: 45 + 9 × 1 = 54 54 + 9 × 2 = 72 72 + 9 × 3 = 99 99 + 9 × 4 = 126 126 + 9 × 5 = 162 So, the missing number in place of the question mark is 99.

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