Question

Let A = {3, 4, 5, 6, 7, 9, 10, 11}

Answer 1

Answer:

a. 256

b. 255

Step-by-step explanation:

If a set has “n” elements, then the number of subset of the given set is $2^n$ and number of proper subset is $2^n-1$

A = {3, 4, 5, 6, 7, 9, 10, 11}

Here, n = 8

No of subsets

$= {2}^{n} = {2}^{8} = 256$

No of proper subsets

= $2^n-1 = 256-1=255$