Question

evaluate the expression

5C2

5!
5-2!=
my 1st answer was 20 than 120 either one was right.
where do I go wrong
Thank so much for your time

Answer 1

5! / [ 2! (5-2)! ]

5!/(2! 3!)

5 * 4 * 3 *2 /(2 * 3 * 2)

10

Answer 2

I'm pretty sure I'm right I believe the answer is 100

Answer 3

Here is a web site that can help you wolframalpha

Answer 4

Mark, the correct answer is 10
Please trust Damon.