Question

n(A) = 10, n(B) =5 such that A,B are disjoint sets , then n(AUB)=​

Answer 1

Since, A and B are disjoint sets

Therefore, n(AnB) = 0

We know that,

n(AUB) = n(A) + n(B) - n(AnB)

=> n(AUB) = 10 + 5 - 0

=> n(AUB) = 15

Hope it helps !!

Answer 2

Answer:

Given that,

n(A)=10, n(B)=5

Since they are disjoint sets.....

So, n(AnB)=0

We know that,

n(AUB)=n(A)+n(B)-n(AnB)

n(AUB)=10+5-0

n(AUB)=15

Hope it helps you frnd........