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What will come at the place of question mark ?
1, 9, 25, 49, ?, 121.

A. 100

B. 91

C. 64

D. 81

Answer: Option D

Solution(By Examveda Team)

12 = 1.
32 = 9.
52 = 25.
72 = 49.
92 = 81.
112 = 121.

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Comments ( 3 )

  1. Swaps K
    Swaps K :
    2 years ago

    hello

  2. Maha Lakshmi
    Maha Lakshmi :
    2 years ago

    1+8=9
    9+16=25
    25+24=49
    49+32=81
    81+40=121

    So 81 is the answr

  3. Emdad Milon
    Emdad Milon :
    3 years ago

    9-1=8=8x1
    25-9=16=8x2
    49-25=24=8x3
    ?-49=32=8x4
    next series will be 49+32=81

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