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Which of the following numbers is not eq...

Which of the following numbers is not equal to `(-8)/(27)?\ ` (a)`(2/3)^(-3)` (b) `(2/3)^3` (c) `(-2/3)^3` (d) `((-2)/3)`x`((-2)/3)`x`((-2)/3)`

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Verified by Experts

The value of option (a) is `(2/3)^(-3)=(3/2)^3=27/8` which is not equal to `-8/27`.
The value of option (b) is `(2/3)^(3)=(2/3)^3=8/27` which is not equal to `-8/27`.
Hence, option (a) and (b) are not correct.
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