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Byju's Answer
Standard XII
Mathematics
Domain
If n(A) = 7 a...
Question
If n(A) = 7 and n(A ∩ B) = 3, then n[(A ∩ B)' ∩ A] is
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Similar questions
Q.
If
A
⊂
B
,
n
(
A
)
=
5
and
n
(
B
)
=
7
, then
n
(
A
∪
B
)
=
______
Q.
If
n
(
A
)
=
15
,
(
A
∪
B
)
=
29
,
n
(
A
∩
B
)
=
7
, then
n
(
B
)
=
?
Q.
If
n
(
A
)
=
5
,
n
(
B
)
=
7
be two sets having
3
elements in common then
n
(
(
A
×
B
)
∩
(
B
×
A
)
)
=
Q.
If
n
(
A
)
denotes the number of elements in set
A
and if
n
(
A
)
=
4
,
n
(
B
)
=
5
and
n
(
A
∩
B
)
=
3
then
n
[
(
A
×
B
)
∩
(
B
×
A
)
]
is
Q.
Let
n
(
A
−
B
)
=
25
+
x
,
n
(
B
−
A
)
=
2
x
and
n
(
A
∩
B
)
=
2
x
. If n(A) = 2(n(B)) then 'X' is
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