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1.	Which of the following are true:
Answer» 1 and 2 1 and 2

Which of the following are true:

Answer»

1 and 2

Discussion

2.	Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x
Answer» A-B = {2,4,6,7,8} A-B = {2,4,6,7,8}

Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x

Answer»

A-B = {2,4,6,7,8}

Discussion

3.	Two finite sets have m and n elements. The total number of subsets of the first set is 56 more than the total number of subsets of the second set. The values of m and n are respectively
Answer» 6, 3 6, 3

Two finite sets have m and n elements. The total number of subsets of the first set is 56 more than the total number of subsets of the second set. The values of m and n are respectively

Answer»

6, 3

Discussion

4.	Which of the following sets are null sets:
Answer» 2 and 3 2 and 3

Which of the following sets are null sets:

Answer»

2 and 3

Discussion

5.	If A = {4n -3n -1: n ? N} and B = {9(n-1): n ? N}, then we have
Answer» A B A Ì B

If A = {4n -3n -1: n ? N} and B = {9(n-1): n ? N}, then we have

Answer»

A B

A Ì B

Discussion