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JEE Advanced 2015 Paper 2 Mathematics Q3
Mathematics
Problem
The coefficient of
x
9
x^9
x
9
in the expansion of
(
1
+
x
)
(
1
+
x
2
)
(
1
+
x
3
)
…
(
1
+
x
100
)
(1+x)(1+x^2)(1+x^3)\ldots(1+x^{100})
(
1
+
x
)
(
1
+
x
2
)
(
1
+
x
3
)
…
(
1
+
x
100
)
is
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