## Top Dice

### Problem 240

Published on Friday, 10th April 2009, 10:00 pm; Solved by 1467; Difficulty rating: 60%There are 1111 ways in which five 6-sided dice (sides numbered 1 to 6) can be rolled so that the top three sum to 15. Some examples are:

D_{1},D_{2},D_{3},D_{4},D_{5} = 4,3,6,3,5

D_{1},D_{2},D_{3},D_{4},D_{5} = 4,3,3,5,6

D_{1},D_{2},D_{3},D_{4},D_{5} = 3,3,3,6,6

D_{1},D_{2},D_{3},D_{4},D_{5} = 6,6,3,3,3

In how many ways can twenty 12-sided dice (sides numbered 1 to 12) be rolled so that the top ten sum to 70?