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 (4)
Related Questions on Number Series Completion
124,36 ka l.c.m
hello
1+8=9
9+16=25
25+24=49
49+32=81
81+40=121
So 81 is the answr
9-1=8=8x1
25-9=16=8x2
49-25=24=8x3
?-49=32=8x4
next series will be 49+32=81