Find the odd one out from the alternatives.

242

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80

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25

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728

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Solution

The correct option is D $25$
The pattern is
(A) $242 = 3^{5}$ - 1
(B) $80 = 3^{4}$ - 1
(C) $25 = 3^{3}$ - 2
(D) $728 = 3^{6}$ - 1
Hence, $25$ is odd one out.

Suggest Corrections

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