Q. 5 A3.9( 10 Votes )

# For any two sets

Answer :

To show that the following four statements are equivalent, we need to show that 12, 23, 3 4, 41

We first show that 1 2

Now A–B = {xϵ A: x B} .As A B,

Each element of A is an element of B,

A–B = ϕ

Hence we proved 1 2.

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