Instructions

In the following number series only one number is wrong. Find out the wrong number.

Question 129

3, 7, 16, 32, 56, 93, 142

Solution

Squares of natural numbers are added

3 $$+ 2^2$$ = 7

7 $$+ 3^2$$ = 16

16 $$+ 4^2$$ = 32

32 $$+ 5^2$$ = 57

57 $$+ 6^2$$ = 93

93 $$+ 7^2$$ = 142

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