Question

Two regular six-sided dice are rolled. what is the probability that the sum will be at least 9?

Answer 1

The possible numbers when two dice are rolled is 2-12incusive

Of these only 4 and 9 are perfect squares

The probability 4 is rolled is 3/36

The probability that a 9 is rolled is 4/36

So p(4 or 9)

3/36 + 4/36

= 7/36