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In the following number series only one number is wrong. Find out the wrong number.
The pattern followed is :
2 $$\times 1 + 2$$ = 4
4 $$\times 2 + 3$$ = 11
11 $$\times 3 + 4$$ = 37
37 $$\times 4 + 5$$ = 153 $$\neq 151$$
153 $$\times 5 + 6$$ = 771
771 $$\times 6 + 7$$ = 4633
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