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Mathematics
Mathematics
Problem
In the expansion of
(
1
+
x
)
18
(1+x)^{18}
(
1
+
x
)
18
, for which value of
k
k
k
is the coefficient of
x
k
x^{k}
x
k
greatest? a)
k
=
10
k = 10
k
=
10
b)
k
=
9
k = 9
k
=
9
c)
k
=
8
k = 8
k
=
8
d)
k
=
11
k = 11
k
=
11
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