$0, 7, 28, 63, 124, 215$ .

7

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63

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28

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215

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Solution

The correct option is D $28$
The pattern is as follows.
$1^{3} - 1 = 0$
$2^{3} - 1 = 7$
$3^{3} - 1 =$
$26$
$4^{3} - 1 = 63$
$5^{3} - 1 = 124$
$6^{3} - 1 = 215$
Hence, the wrong number in the series is $28$ .

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