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Combinatorics
hard
0:00.0
Find
n
n
n
if
C
(
n
,
10
)
=
C
(
n
,
12
)
C(n, 10) = C(n, 12)
C
(
n
,
10
)
=
C
(
n
,
12
)
.
A
20
B
22
C
2
D
12
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