Instructions
What will come in place of the question mark (?) in the given number series?
Solution
The pattern followed is :
11 $$\times 1 - 2$$ = 9
9 $$\times 2 - 3$$ = 15
15 $$\times 3 - 4$$ = 41
41 $$\times 4 - 5$$ = 159
159 $$\times 5 - 6$$ = 789
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