You roll two fair dice a blue one and a yellow one

Question

You roll two fair dice  a blue one and a yellow one 
what is the probability of and odd on the blue die and 5 or 6 on the yellow die

Reiny · Accepted Answer

prob(odd on blue) = 1/2
prob(5 or 6 on yello) = 2/6 = 1/3

prob(odd on blue AND 5or6 on yellow)
= (1/2)(1/3) = 1/6

Proof and check:
There are 36 possible ways for the 2 dice to fall

the ones you want are:
1 5
1 6
3 5
3 6
5 5
5 6, which is 6 of them
so prob(as stated) = 6/36 = 1/6

Anonymous · Answer

sara and sam are rolling dice. they are using two dice. if sara rolls a 4,9,10, or 12, sam will pay her $100