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Byju's Answer
Standard XII
Mathematics
Relation between Coefficient and Indices of x and y
Find the coef...
Question
Find the coefficient of
x
2
y
2
z
in the multiple expansion of
(
x
+
y
+
z
)
5
.
A
30
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B
40
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C
50
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D
60
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Solution
The correct option is
A
30
The general term in the expansion of
(
x
+
y
+
z
)
5
is
5
!
m
!
n
!
t
!
x
m
y
n
z
t
So the coefficient of
x
2
y
2
z
is
5
!
2
!
2
!
2
!
=
30
Therefore the correct option is
A
Suggest Corrections
1
Similar questions
Q.
If the median of the distribution given below is
28.5
, find the values of
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.
Class-interval
0
−
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I
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(
x
+
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+
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)
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)
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