Question

17C4

Answer 1

you've been asked to evaluate a combination

they use factorial notation which is

\[n! = n \times (n -2) \times (n -2)\times (n - 3) \times ... 3 \times 2\times 1\]

as an example

\[4! = 4 \times 3\times 2\times 1\]

the combination formula is

\[^{n}C_{r} = \frac{n!}{r!(n - r)!}\]

in your question n = 17 and r = 4 so you will have

\[^{17}C_{4} = \frac{17!}{4!(17 - 4)!}\]

just evaluate it.

Answer 2

no its just 17C4 and then u have
A. 2,380
B. 680
C. 57,120

Answer 3

yep... you need to evaluate it

here is a combinations calculator to help you

http://www.mathsisfun.com/combinatorics/combinations-permutations-calculator.html

Answer 4

thank you soooooo much i got it