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Class-11,Sets
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Q1) If A and B are two sets, then A∩(A∪B)′ is equal to
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1 point
∅
A
none of these
Option 7
Q2) Let A and B be two sets such that n(A)=35,n(B)=42andn(A∩B)=17, find n(A−B)
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1 point
19
25
18
17
Q3) If A is any set , then
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1 point
A∪A′=U
A∩A′=A
A∪A′=ϕ
A∩A′=U
Q4) If A and B be any two sets , then (A∪B)′ is equal to
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1 point
A∪B
A′∪B′
A′∩B′
A∩B
Q5) If A and B be any two sets , then (A∩B) ‘ is equal to
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1 point
A′∩B′
none of these.
A′∪B′
A∩B
Q6) Let A = { 1,2,3,4} , B = { 2,3,4,5,6 } , then (A∩B)is equal to :
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1 point
{ 1 }
{ 5,6 }
{ 1,2,3 }
{ 2,3,4 }
Q7) Let U = { 1,2,3,4,5,6,7,8,9,10 } , A = { 1,2,5 } , B = { 6,7 }. Then A∩B′ is
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1 point
B’
A’
B
A
Q8) Let A = { a,b,c } , B = { b,c,d } , C = { a,b,d,e } , then A∩(B∪C) is
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1 point
{ a,b,c }
{ e }
{ a,b,d,e }
{ b,c,d }
Q9) If A and B are two sets , then A∪B=A∩B iff
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1 point
A ⊆ B
none of these
A = B
B ⊆ A
Q10) Let A and B be two sets in the universal set . Then A - B is equal to
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1 point
A−(A∩B)
A∩ B
none of these
A’ ∩ B
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