MEDIUM
11th CBSE
IMPORTANT
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If P and Q are two well defined and finite sets and Q has 90 elements, P∩Q has 30 elements and P∪Q has 108 elements, the cardinality of P-Q is

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Important Questions on Sets

HARD
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 5
There is a certain number of students in a school. Of them, 130 students passed subject  A, 113 passed subject B, 117 passed subject C. But 60 of the students passed exactly two of the subjects whereas 20 students passed all the three. Further 70 students failed in all subjects. The total number of students is
MEDIUM
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 6
If A=(x,y):x2+y2=25 and B=(x,y):x2+9y2=144, where x,y are integers, the number of elements in A∪B is 
MEDIUM
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 7
If A and B are two finite sets such that n[P(A)]=n[P(B)]+992, n(A)+n(B) is
MEDIUM
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 8
If the sets A and B have 3 and 6 elements respectively, the minimum number of elements in A∪B is 
EASY
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 9
Let A and B are two sets with m and n elements, respectively. If the number of subsets of first set is 56 more than the number of subsets of the second set, then (m, n) is
MEDIUM
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 10
If Nk={kn: n∈N}, N4∩N6 is equal to
EASY
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 11
If A and B are two sets, then A∩(A∪B) equals
EASY
11th CBSE
IMPORTANT
Golden MATHEMATICS CLASS 11>Chapter 1 - Sets>OBJECTIVE TYPE QUESTIONS>Q 12
If A is a finite set having n elements, then the power set P(A) has