Question

please answer only if you know​

Answer 1

Answer:

its last one

Step-by-step explanation:

but i am not sure

Answer 2

Hii Friend,

Here is your Answer,

last option (15)

Proper explanation :-

There is a formula of finding number of proper subsets = 2^n - 1

Number of elements in set A is 4.

Now,

2⁴ - 1

16 - 1

15.

Hope it helps you.

Please make me BRAINLIESTS.