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Set A has m elements and Set B has n elements. If the total number of subsets of A is 112 more than the total number of subsets

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Set A has m elements and Set B has n elements. If the total number of subsets of A is 112 more than the total number of subsets of B, then the value of m.n is ___.

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1 Answer

+1 vote
by (49.2k points)

2m – 2n = 112 

m = 7, n = 4 

(27 – 24 = 112) 

m × n = 7 × 4 = 28

by (65 points)
+1
can u pls explain how did this 2 come there?
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