Quantitative aptitude Practice Questions & Answers

 Which of the following sets are null sets:

 Which of the following sets are null sets:

A). 2 and 3

B). {x: x < 5, x > 6}

C). {x: |x |< -4, x ?N}

D). Set of all prime numbers between 15 and 19

 Which of the following are true:

 Which of the following are true:

A). 1 and 2

B). {x: x >3, x ?0} ? ?

C). {x: x2-1= 0, x ?N} ? {-1, 1}

D). {x: x2 - 4x + 3 = 0} = {1, 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

 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

A). 4,1

B). 6, 3

C). 8, 5

D). none of these

 Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x<10}. Which of the following is false?

 Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x<10}. Which of the following is false?

A). A? B = {1,3,5,9}

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

C). A U B = {1,2,3,4,5,6,7,8,9}

D). none of these

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

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

A). B  A

B). A ΠB

C). A? B = ?

D). none of these

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