Question

If n (P)=40,n(Q)=60 and n (PUQ)=80 Find n ( P n Q)

Answer 1

Answer:

10

Step-by-step explanation:

Given n(P ∪ Q) = 80, n(P) = 40, n(Q) = 60

We know that n(P U Q) = n(P) + n(Q) - n(P ∩ Q)

So, 80 = 30 + 60 - n(P ∩ Q)

80 = 90 - n(P ∩ Q)

Therefore, n(P ∩ Q) = 90 – 80

= 10

Answer 2

Answer:

n (P)=40,n(Q)=60,n (PUQ)=80

n (P)+n (Q)n-n( P n Q)=n(PuQ)

40+60-n ( P n Q)=80

n ( P n Q)=20

Step-by-step explanation:

please check pic