Two dice, one red and one white are rolled. What is the probability that the white die turns up a smaller number than the red die ?

Answer 1

15/36 = 5/12

Answer 2

(white, red)
----> 12 13 14 15 16 (5 of them
----> 23 24 25 26 (4 of them)
----> 34 35 36 (3 of them)
----> 45 46 (2 of them)
----> 56 just one

so 5+4+3+2+1 = 15

prob(your event) = 15/36