Instructions

What will come in place of the question mark (?) in the following number series?

Question 146

8, 17, 42, 91, ?

Solution

Square of odd consecutive numbers are added

8 + $$3^2$$ = 17

17 + $$5^2$$ = 42

42 + $$7^2$$ = 91

91 + $$9^2$$ = 172


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