2. When two ordinary dice, one black and one white, are rolled, the number of ways the sum of 7 can occur is A) 2 B) 8 C) 4 D) 7 E) 6

The number of ways of getting 7 are as follows:

1+6

2+5 3+4

4+3

5+2

6+1

that's 6 total cases, which means our answer is E). This is simply just a couple of cases.