Question

What is the number of ways to arrange 6 objects from a set of 10 different objects?

A. 520
B. 78,400
C. 151,200
D. 210

Answer 1

Its 10C6
which is 10!/(6!(10-6)!) = ..

Answer 2

how do i work the problem out?

Answer 3

We use the n Choose R Formula
which is \[\frac{n!}{r!(n-r)!}\]
In this case n=10 cuz there are 10 options
and r=6 cuz thats the amount we are selecting