NCERT Example 11 - Sets

Question: If A belongs to B and B is a subset of C, is A necessarily a subset of C?

Answer: No. For A = {1}, B = {{1}, 2}, C = {{1}, 2, 3}, A belongs to B and B subset C, but A is not a subset of C.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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