Answer:
1/24
Explanation:
It's important to know that when there's an exclamation mark next to a number it means its multiplying itself by it's decreasing positive integers.
multiply
((3*2*1)(5*4*3*2*1))/((6*5*4*3*2*1)(4*3*2*1))
multiply again
((6)(120))/((720)(24))
and from here you simplify
720/17280
1/24
hope this helped :)