MEDIUM
11th CBSE
IMPORTANT
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The number of proper subsets of the set {a, b, c, d, e, f, g} is

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Important Questions on Sets

EASY
11th CBSE
IMPORTANT
Let A={2,3,4,8,10}, B={3,4,5,10,12} and C={4,5,6,12,14}, then ABAC is
EASY
11th CBSE
IMPORTANT
Let A={x: x is a digit in the number 3591}, B={x: xN, x<10}, then which of the following is false.
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
EASY
11th CBSE
IMPORTANT
If A and B are two sets, A(AB) is 
EASY
11th CBSE
IMPORTANT
If A={a,b,c,d,e}, the number of elements of the power set of A 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