Question 133

What will come in place of the question mark (?) in the following number series?
9  10  39  220  ?  14382

Solution

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The pattern followed is :

9 $$\times 1 + 1^2$$ = 10

10 $$\times 3 + 3^2$$ = 39

39 $$\times 5 + 5^2$$ = 220

220 $$\times 7 + 7^2$$ = 1589

1589 $$\times 9 + 9^2$$ = 14382

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