Instructions

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

Question 125

2, 7, 26, 101, 400, ?

Solution

The pattern here followed is :

2 $$\times 4 - 1$$ = 7

7 $$\times 4 - 2$$ = 26

26 $$\times 4 - 3$$ = 101

101 $$\times 4 - 4$$ = 400

400 $$\times 4 - 5$$ = 1595

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