Question

5) If A Intersection B = { } then Aand B are called______sets
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Answer 1

Answer:

When A ∩ B = φ, then A and B are called disjoint sets. (i) 2x – 1 is always an odd number for all positive integral values of x. In particular, 2x – 1 is an odd number for x = 1, 2, ... , 9. Thus, A = {1, 2, 3, 4, 5, 6, 7, 8, 9}.

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Answer 2

If A intersection B = { } then A and B are called Disjoint sets.