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REASONING
1, 5, 13, 25, 41, 61,...

1, 5, 13, 25, 41, 61, ____

A

85

B

77

C

81

D

91

Text Solution

Verified by Experts

The correct Answer is:
A
1 + 4 = 5
5 + (4 + 4) = 13
13 + (8 + 4) = 25
25 + (12 +4) = 41
41 + (16+4) = 61
61 + (20+4) = 85
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