david has invented a game for one person. he throws two ordinary dice repeatedly until the sum of the two numbers shown is either 7 or 9. if the sum is 9, David wins. If the sum is 7, David loses. If the sum is any other number, he continues to throw until until it is 7 or 9
iii) What is the probability David wins on his first, second, or third throw? Leave your answer in unsimplified form
answer is (13/12)^2 x 1/9
why is that???? cheers brahhhhhh
iii) What is the probability David wins on his first, second, or third throw? Leave your answer in unsimplified form
answer is (13/12)^2 x 1/9
why is that???? cheers brahhhhhh