In: Advanced Math
For the following exercises, compute the value of the expression.
C(8, 5)
Consider the expression C(8, 5)
Use the general formula for combination,
C(n, r) = n!/r!(n – r)! ...... (1)
Substitute n = 8 and r = 5 in formula (1) C(n, r) = n!/r!(n – r)! and simplify,
C(8, 5) = 8!/r!(8 – 5)!
= 8!/5! × 3!
= (8 × 7 × 6 × 5!)/(5! × 3 × 2 × 1)
= 56
Therefore, the value of the given expression is C(8, 5) = 56.
Therefore, the value of the given expression is C(8, 5) = 56.