Question

Fnd the probability that a three digit number formed from the numbers 2,4,5,7,8,9 with no repetition
a) greater than 700
b) less than 500
c) divisible by 5.

Answer 1

You just have to think about how each case could happen, and then take the probability of that happening.

Answer 2

Take part a). It will be greater than 700 if the first digit is 7, 8, or 9. So just take the probability of that happening.

Answer 3

k, thanks.