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mezya [45]
2 years ago
15

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

Mathematics
1 answer:
Troyanec [42]2 years ago
5 0

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

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