If two fair dice, one red and one white, are rolled, in how many ways can the result be obtained?
-The sum of the two dice is at least 6.
A)25 ways
B)6 ways
C)26 ways
D)21 ways

Question

Quizplus · Accepted Answer

There are a total of 36 possible outcomes when rolling two dice (6 outcomes for the red die multiplied by 6 outcomes for the white die). To find the number of outcomes where the sum is at least 6, it's easier to subtract the outcomes where the sum is less than 6 from the total. Sums less than 6 are obtained with pairs (1,1), (1,2), (1,3), (1,4), (2,1), (2,2), (2,3), (3,1), (3,2), and (4,1), which are 10 pairs. Subtracting these from the total gives 36 - 10 = 26 ways.

If Two Fair Dice, One Red and One White, Are