Question

find the probability of rolling a sum of 6 with two dice

Answer 1

This is how I would approach this problem.

1+5, 2+4, 3+3 are all possible combinations of sums of 6
(saying that lets say 1+5 and 5+1 is the same thing)

now, all possible combinations are

1+1, 1+2, 1+3, 1+4, 1+5, 1+6,
2+2, 2+3, 2+4, 2+5, 2+6,
3+3, 3+4, 3+5, 3+6,
4+4, 4+5, 4+6,
5+5, 5+6
6+6

(I wrote the middle 4 rows out, to show how it actually goes but it wasn't really necessary)

So there are 21 possible rolls with 2 dices and only 3 of them are sums of 6)

So the P= ?

Answer 2

there is only 3 probability

Answer 3

3+3
1+5
2+4

Answer 4

yes, 3 out of 21, which means that P=?

(I am not supposed to explicitly say the answer.)