Question

if n (A×B)=6and A={1,3}then n (b) is
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Answer 1

Answer:

1. n(AxB) =6
2. A = {1,3}
3. n(A)=2
4. (2xB) =6
5. B= 6÷2
6. B= 3
7. n(b) = 3