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Question

Which one of the following options is the multiplicative inverse of 25?

A
(2)5
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B
25
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C
52
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D
52
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Solution

The correct option is B 25
Since x×1x=1, the multiplicative inverse of any non-zero x isgiven by 1x.

Hence, the multiplicative inverse of 25 is 125.
But, 125=25 as 1am=am.
Thus, the multiplicative inverse of 25 is 25.

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