\( N \) is a natural number such that when \( N^{3} \) is divided by 9 , it leaves remainder \( ...

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\( N \) is a natural number such that when \( N^{3} \) is divided by 9 , it leaves remainder \( a \). It can be concluded that
(a) \( a \) is a perfect square.
(b) \( a \) is a perfect cube.
(c) Both (a) and (b)
(d) Neither (a) nor (b)
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