Question

Can someone help me with this geometry question? My instructor said I was wrong?

Answer 1

`\begin{gathered} 8P3=336 \\ Let: \\ A=A_{\text{ }}senior_{\text{ }}is__{\text{ }}top_{\text{ }}3 \\ P(A\cap A_(-1)\cap A_(-2))=(8)/(14)\cdot(7)/(13)\cdot(6)/(12)=0.1538 \end{gathered}`