What will come at the place of question mark 1 9...

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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.

This Question Belongs to Competitive Reasoning >> Number Series Completion

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Comments ( 3 )

Swaps K :

5 years ago

hello
Maha Lakshmi :

6 years ago

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

So 81 is the answr
Emdad Milon :

6 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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