Question:medium
Let \(A\) and \(B\) be two finite sets. If \(n(A) = 7\) and the number of relations from \(A\) into \(B\) is 128, then \(n(B) =\)
Let \(A\) and \(B\) be two finite sets. If \(n(A) = 7\) and the number of relations from \(A\) into \(B\) is 128, then \(n(B) =\)
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A relation is any subset of \(A \times B\), so total subsets = \(2^{|A||B|}\).
Updated On: Apr 25, 2026
- 4
- 3
- 2
- 1
- 0
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The Correct Option is D
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