two numbers rolled can be added to get a sum. Find P(sum is less than 4)

1 answer

There are six possible outcomes when two numbers are rolled:

1+1, 1+2, 1+3, 2+1, 2+2, 3+1

Out of these, only 1+1 has a sum that is less than 4.

Therefore, the probability of getting a sum that is less than 4 is:

P(sum is less than 4) = 1/6