This question was previously asked in

REET 2012 Level - 2 (Maths & Science) (Hindi/English/Sanskrit) Official Paper

- 3
^{6} - 9
^{3} - 27
^{2} - 6
^{3}

Option 4 : 6^{3}

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(32)3 = 3^{6 }= 729

36 = 729

9^{3 }= 729

27^{2 }=729

6^{3} = 216

**Hence, 63 is not equal to (32)3.**

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