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Consider the statement : " For an integer n, if n^{3}-1 is even, then n is odd.'' The contrapositive statement of this statement is :
Option: 1 For an integer n, if n is even, then n^{3}-1 is odd.
Option: 2 For an integer n, if n^{3}-1 is not even, then n is not odd.
Option: 3 For an integer n, if n is even, then n^{3}-1 is even.
Option: 4 For an integer n, if n is odd, then n^{3}-1 is even.

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\begin{aligned} &\text { Contrapositive of }(\mathrm{p} \rightarrow \mathrm{q}) \text { is } \sim \mathrm{q} \rightarrow \sim \mathrm{p}\\ &\text { For an integer } n \text { , if } n \text { is even then }\left(n^{3}-1\right) \text { is odd } \end{aligned}

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