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Question

Two finite sets have $m$ and $n$ elements. The number of elements in the power set of first set is 48 more than the total number of elements in the power set of the second set. Then, the value of $M$ and $N$ are

7, 6
6, 3
6, 4
7, 4

The correct answer is: 6, 4

According to question,
$2 to the power of m end exponent minus 2 to the power of n end exponent equals 48$
This is possible only if $m equals 6$ and $n equals 4$ .

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