Question

if nC5 =nC6, then nC5 -13Cn=​

Answer 1

Step-by-step explanation:

If nC5=NC6

then nC5-13Cn=

=rearrangement of variables=

n C 5 -13 C n

=5Cn-13Cn

=-8Cn it is the correct answer

Answer 2

I don't know the answer