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Maths-

General

Easy

Question

If two sets $A$ and $B$ are having 99 elements in common, then the number of elements common to each of the sets $A cross times B$ and $B cross times A$ are

$2^{99}$
$99^{2}$
100
18

The correct answer is: $99 to the power of 2 end exponent$

Number of elements common to each set is $99 cross times 99 equals 99 to the power of 2 end exponent$ .

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