Question

3.
If n(A) = 15, n(B) = 24 and A CB then
find n(A U B) and n(A n B)​

Answer 1

Answer:

Given:

n(a)=15

n(a Ub)=29

n(ab)=7

To find:

n(b)

Solution:

We know that

n(a Ub)=n(a)+n(b)-n(n Mb)

To find the value of b we are using the above formula

Now, substitute the values then, we get

29 15+ n(b) — 7

n(b) = 29 −15+7

n(b) = 21

Hence, the value of n(b)=21

Answer 2

Answer:

Step-by-step explanation: