Question

x = {a,b,c,d} the proper subset of x is:
a={a,b,c,d}
b={b,d,a,c}

Answer 1

Hello mate..

Answer :-

Proper Subset : A proper subset of a set, denoted, is a subset that is strictly contained in and so necessarily excludes at least one member of. The empty set is therefore a proper subset of any nonempty set.

So,

Here, the proper sub set of ‘x’ is ‘a’ as it contains all elements of ‘x’ in same order.

HOPE THIS HELPS YOU..