David W. answered 01/08/19
Experienced Prof
Put all of the possible outcomes in a table [note: WyzAnt doesn't like multiple spaces).
.....Roll.1.......1......2.....3.....4.....5.....6
Roll 2 ------------------------------------------------
....1................2......3.....4.....5.....6.....7
....2................3......4.....5.....6.....7.....8
....3................4.....5......6.....7.....8.....9
....4................5.....6......7.....8.....9.....10
....5................6.....7......8.....9....10.....11
....6................7.....8......9.....10....11....12
Event A: There are 6 out of 36 cases in which the sum is greater than 9. P(A) = 6/36 = 1/6
Event B: There are 6 out of 36 times that the sum is evenly divisible by 6 (that is, no remainder).
P(B) = 6/36 = 1/6
David W.
. . . "sum greater than 6 is not in problem statement."01/08/19