Question

P and Q are the subsets of a universal set U.
If n(P)=45,n(Q)=55 n(PUQ)=90, n(PUQ)'=15, Find n(U), n(PnQ) and no (P).
Please show step by step solution its the question of set.

Answer 1

Answer:

n(A ∪ B) = n(A) + n(B) - n(A ∩ B)  

If A ∩ B = ф , then n(A ∪ B) = n(A) + n(B)  

It is also clear from the Venn diagram that  

Step-by-step explanation:

Answer 2

Answer:

$if \: aub \: = \: pp \:$

$then \: naub \: = \:$

Step-by-step explanation:

$aub \: = \: n(a)$

$+ n + b$