Instructions

In the following number series, a wrong number is given. Identify the wrong number that does not follow the given pattern.

Question 140

9, 10, 18, 45, 109, 235, 450

Solution

In the series, cubes of natural numbers are added

9 $$+ 1^3$$ = 10

10 $$+ 2^3$$ = 18

18 $$+ 3^3$$ = 45

45 $$+ 4^3$$ = 109

109 $$+ 5^3$$ = 234 $$\neq$$ 235

234 $$+ 6^3$$ = 450

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