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    5. 12      11       21       62       ?        1234

    Question

    What will come in place of (?) in the following questions?

    12      11       21       62       ?

           1234
    A 347 Correct Answer Incorrect Answer
    B 251 Correct Answer Incorrect Answer
    C 281 Correct Answer Incorrect Answer
    D 321 Correct Answer Incorrect Answer
    E 247 Correct Answer Incorrect Answer

    Solution

    12 × 1 - 1 = 11 11 × 2 - 1 = 21 21 × 3 - 1 = 62 62 × 4 - 1 = 247 247 × 5 - 1 = 1234

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