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    Question

    Find out the wrong number in the following given number series :

    10                          

    19                           58                           115                         347                         691
    A 10 Correct Answer Incorrect Answer
    B 58 Correct Answer Incorrect Answer
    C 691 Correct Answer Incorrect Answer
    D 347 Correct Answer Incorrect Answer
    E 19 Correct Answer Incorrect Answer

    Solution

    10 × 2 – 1 = 19 19 × 3 + 1 = 58 58 × 2 – 1 = 115 115 × 3 + 1 = 346 346 × 2 – 1 = 691

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