Sets Test - 3...

A set has 7 elements. The number of elements in its power set is:

For any sets A and B, P(A∩B)=

In a certain class 15 students play basket-ball, 13 play chess and 5 play both the games. How many students are there in the class assuming that each students play at least one of the game?

How many elements does P(A) have, If A = Φ

If U, the universal set, is the set of all students of a school which are in classes from I to X and B = set of all students of class X. What is B'?

Given the sets P = {2,4,6}, Q = {3,5,7} and  R = {1,3,5,7,9}, which of the following may be considered as universal set for all the three sets P, Q and R?

Given the sets A = {1, 3, 5}, B = {2, 4, 6} and C = {0, 2, 4, 6, 8}, which of the following may be considered as universal set  for all the three sets A, B and C?

The set builder form of the set B = {2, 3, 5, 7, 11} is