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Mathematics
Mathematics
Problem
If
9
P
3
=
504
{}^{9}P_{3}=504
9
P
3
=
504
, the value of
9
C
3
{}^{9}C_{3}
9
C
3
is a)
126
126
126
b)
56
56
56
c)
84
84
84
d)
168
168
168
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