21.
What will come at the place of question mark ?
2816, ? , 176, 44, 11.

22.
What will come at the place of question mark ?
113, 225, 449, ? , 1793

23.
Which of the following will come in place of the question mark (?) in the following sequence?

PRODUCTIVITY, RODUCTIVIT, ODUCTIVI, ?

24.
What will come at the place of question mark ?
6, 24, 60,120, 210, ?

25.
What will come at the place of question mark ?
6, 11, 31, 121, 601, ?

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