Evaluate the expression.
-$$\left( \begin{array} { l }
5 \
2
\end{array} \right)$$
A) 5
B) 10
C) 0
D) 1

Question

Evaluate the expression.
-$$\left( \begin{array} { l } 
5 \
2
\end{array} \right)$$
A) 5
B) 10
C) 0
D) 1

Quizplus · Accepted Answer

The expression $\left( \begin{array} { l } 5 \ 2 \end{array} \right)$ represents the number of ways to choose 2 items out of 5, which is calculated using the combination formula $C(n, k) = \frac{n!}{k!(n-k)!}$. For this case, it's $C(5, 2) = \frac{5!}{2!(5-2)!} = \frac{120}{2 \times 6} = 10$.

Evaluate the Expression (52)\left( \begin{array} { l } 5 \\2\end{array} \right)(52​)

Evaluate the Expression $\left( \begin{array} { l } 5 \\2\end{array} \right)$