(number of favorable outcomes) / (number of possible outcomes)

So you need to count how many ways there are to get it right and divide by the number of possibilities.

#1 When rolling 2 dice (number cubes) there are 36 possibilities. One of these is double 3’s. So the probability of that happening is 1/36.

#2 There is again only one way to win. This time, there are 50*50*50 = 12500 total possibilities. So the probability is 1/12,500.

(By the way, 50*49*48 would be the number of possibilities of the numbers could NOT repeat.)

I hope this helps!

50 times 49 times 48 equals 117600 divided by 2 equals 58800 since it is a combination