Question

The diagram below shows all the possible totals from adding together the results of rolling two fair dice.

a) What is the probability of rolling a total of 4? Give your answer as a fraction in its simplest form.

b) If you rolled a pair of fair dice 360 times, how many times would you expect to roll a total of 4?

Please I need this ASAP!!!

Answer 1

a) P(rolling a 4) = 3/36 = 1/12

b) 360 × 1/12 = 20 times