Question

IF A and B two sets such that n(A) = 16, n(B) = 12 and n(
A B) = 8. then n(AUB)
a) 28
b) 20
c) 36
d) 12
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Answer 1

Given:

A and B two sets such that n(A) = 16, n(B) = 12 and n(

A B) = 8.

To find:

Find the value of  n(AUB)

Solution:

From given, we have,

A and B two sets such that n(A) = 16, n(B) = 12 and n(

A ∩ B) = 8.

we use the direct formula to find the value of n(A ∪ B) and is given by,

n (A U B) = n (A) + n (B) - n (A∩B)

n (A U B) = 16 + 12 - 8

∴ n (A U B) = 20

Therefore option (b) 20 is the correct option.

Answer 2

Answer:

the ans is option b) 20

Step-by-step explanation: