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Mathematics
Mathematics
Problem
If
n
C
5
=
n
C
6
{}^{n}C_{5}={}^{n}C_{6}
n
C
5
=
n
C
6
, determine
n
n
n
. a)
10
10
10
b)
11
11
11
c)
9
9
9
d)
12
12
12
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