# NCERT Class 11 Mathematics Solutions: Chapter 1 – Sets Miscellaneous Exercise Part 3 (For CBSE, ICSE, IAS, NET, NRA 2022)

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1. Show that if , then .

Here, to show ,

Let

2. Assume that Show that .

Here, to show

Let

, for some

Now,

Similarly,

2. Is it true that for any sets and , ? Justify your answer.