A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 7 given that one die is showing a 4?

Answer 1

well, then the other die must be a 3. and since there is 6 faces on a die and 3 is just one face, i guess it would be 1/6. I WOULD DOUBLE CHECK THOUGH, IM NOT SURE.

Answer 2

There are only 2 choices,\
3,4 or 4,3.
So the prob of getting those is 2/36
= 1/18