Q. 23.7( 6 Votes )

# If P and Q are tw

Answer :

Given:

n(P) = 40

n (P Q) = 60

n (P Q) =10

n(Q) = ?

We know,

n (P Q) = n(P) + n(Q) – n (P Q)

Substituting the values we get

60 = 40+n(Q)–10

60 = 30+ n(Q)

n(Q) =30

Q =has 30 elements.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation view all courses RELATED QUESTIONS :

Mark the correct RD Sharma - Mathematics

Mark the correct RD Sharma - Mathematics

If A and B are twRD Sharma - Mathematics

If A and B are twRD Sharma - Mathematics

A survey shows thRD Sharma - Mathematics

If A = {x : x <spRS Aggarwal - Mathematics

Mark the correct RD Sharma - Mathematics

In a group of 70 RD Sharma - Mathematics

If P and Q are twRD Sharma - Mathematics