Five 6-sided dice are rolled. What is the probability that exactly one of the dice shows 1?

[5 nCr 1] * 5^4 =3125 / 6^5, or:

 

[5 nCr 1 * (1/6)^1 * (5/6)^4 =0.401877572, which is exactly the same as: 3125 / 6^5.

I think that it would be 5/30

1. I saw that there were 5 dice so that would be my numerator because that would be how many chances you get.....

2. I fond the (LCM) Least Common Multiple for 6 and 5, and that is 30 so that would be my denominator.