EASY
11th CBSE
IMPORTANT
Earn 100

The value of n[(A-B)(B-A)]+n(AB) equals

57.14% studentsanswered this correctly

Important Questions on Sets

HARD
11th CBSE
IMPORTANT
In a group of 20 students, 12 take tea, 16 take coffee and 3 take neither of the two. How many take both tea and coffee?
MEDIUM
11th CBSE
IMPORTANT
In a school, out of 20 teachers,12 teach Mathematics while 4 teach both Mathematics and Physics, number of teachers who teach Physics is
MEDIUM
11th CBSE
IMPORTANT
If n(U)=1000,n(A)=400,n(B)=300 and n(AB)=100,nA'B' is equal to
MEDIUM
11th CBSE
IMPORTANT
Let U={x:xN, x10}, A={x:xN, 2x8} and B={x:x is a prime number<10}, then (A-B)' is equal to
HARD
11th CBSE
IMPORTANT
In a survey of 75 people, it was found that 27 people liked the product A, 30 liked the product B, 30 people liked the product C and 14 people did not have any preference. If 11 people liked the products A and B, 10 people liked the product B and C, 9 people liked the products A and C and 4 liked all the three products, then the number of people who liked only one product is
EASY
11th CBSE
IMPORTANT
For the sets U={1,2,3,,10},A={1,2,5,6},B={6,7} verify that A-B=AB'=B'-A'
MEDIUM
11th CBSE
IMPORTANT
If A={4,5,7,8,10},B={4,5,9} and C={1,4,6,9}, verify that (AB)C=A(BC)
MEDIUM
11th CBSE
IMPORTANT
If A={4,5,7,8,10},B={4,5,9} and C={1,4,6,9}, verified that A(BC)=(AB)(AC).