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In the expansion of (x^3-1/x^2)^n, n in ...

In the expansion of `(x^3-1/x^2)^n, n in N` if sum of the coefficients of `x^5` and `x^(10)` is 0 then `n` is

A

25

B

20

C

15

D

None of these

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IPUCET PREVIOUS YEAR PAPERS-GGSIPU MATHMATICS 2011-MCQ
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  10. If A is a square matrix such that A^2 = I, then A^(-1) is equal to (i...

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