10,    11,    13,    21,     69,     ?

  • Option 1)

    384

  • Option 2)

    490

  • Option 3)

    453

  • Option 4)

    390

  • Option 5)

    None of The Above

Answers (1)

10,    11,    13,    21,     69,     ?

The series follows the pattern of +1(1×1+1), +2(2×3+2), +8(8×5+8), +48(48×7+48) and so on.

So, at the end, 69+384= 453

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