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    Question

    3,┬а ┬а ┬а2,┬а ┬а ┬а3,┬а ┬а 8,┬а ┬а 31,┬а ┬а

    ? What should come in place of the question mark (?) in the following number series?
    A 154 Correct Answer Incorrect Answer
    B 155 Correct Answer Incorrect Answer
    C 156 Correct Answer Incorrect Answer
    D 157 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    3 ├Ч 1 - 1 = 2 2 ├Ч 2 - 1= 3 3 ├Ч 3 - 1= 8 8 ├Ч 4 - 1 = 31 31 ├Ч 5 - 1= 154

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