Question

    Directions (Q.51 - 55): What should come in place of the question mark (?) in the following number series?

    12 3 15 ? 153 756

    A 8 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 25 Correct Answer Incorrect Answer
    D 36 Correct Answer Incorrect Answer
    E 32 Correct Answer Incorrect Answer

    Solution

    12 × 1 - 3² = 3 3 × 2 + 3² = 15 15 × 3 - 3² = 36 36 × 4 + 3² = 153 153 × 5 - 3² = 756

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