In following questions, one term in number series is incorrect.
Find out the incorrect number 5, 27, 61, 122, 213, 340, 509
Option:
A. 27
B. 61
C. 122
D. 509
Answer: A . 27
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Justification:
The correct sequence is 23 - 3, 33 - 3, 43 - 3, 53 - 3, 63 - 3, 73 - 3, 83 - 3.
So, 27 is wrong and should be replaced by 33 - 3 i.e. 24.
