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Question
Mathematics
If X = x: x ∈ N Y = 2x: x ∈ N and Z = 5x: x ∈ N then X ∩ Y ∩ Z is equal to
Q. If
X
=
{
x
:
x
∈
N
}
,
Y
=
{
2
x
:
x
∈
N
}
and
Z
=
{
5
x
:
x
∈
N
}
then
X
∩
Y
∩
Z
is equal to
2719
212
Sets
Report Error
A
{
x
:
x
∈
N
}
26%
B
{
5
x
:
x
∈
N
}
16%
C
{
10
x
:
x
∈
N
}
50%
D
{
2
x
:
x
∈
N
}
8%
Solution:
X
∩
Y
∩
Z
=
L.C.M. of
(
x
,
2
x
,
5
x
)
=
10
x
∀
x
∈
N