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Standard XI
Maths
Question
The value of
x
satisfying the relation
11
(
x
C
3
)
=
24
(
(
x
+
1
)
C
2
)
is
9
8
11
12
10
A
12
B
10
C
8
D
9
E
11
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Solution
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11
(
x
C
3
)
=
24
(
x
+
1
C
2
)
⇒
11
×
x
!
(
x
−
3
)
!
3
!
=
24
×
(
x
+
1
)
!
(
x
−
1
)
!
2
!
⇒
11
×
x
(
x
−
1
)
(
x
−
2
)
(
x
−
3
)
!
(
x
−
3
)
!
3
!
=
24
×
(
x
+
1
)
(
x
)
(
x
−
1
)
!
(
x
−
1
)
!
2
!
⇒
11
(
x
−
1
)
(
x
−
2
)
=
72
(
x
+
1
)
Therefore,
x
=
10
satisfy the above equation.
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Similar Questions
Q1
The value of
x
satisfying the relation
11
(
x
C
3
)
=
24
(
(
x
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1
)
C
2
)
is
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