Question

Evaluate:

8C6
A.
28
B.
48
C.
56
D.
112

Answer 1

28 because I have done this

Explanation:

Answer 2

`C^n_m=\left(\begin{array}{ccc}m\\n\end{array}\right)=(m!)/(n!(m-n)!)\\\\C^6_8=\left(\begin{array}{ccc}8\\6\end{array}\right)=(8!)/(6!(8-6)!)=(6!\cdot7\cdot8)/(6!\cdot2!)=(7\cdot8)/(1\cdot2)=(56)/(2)=28`