Question

If a die is rolled twice, what is the probability of rolling a 5 and then a 2?

Answer 1

what is the probability of rolling a 5

Answer 2

any ideas?

Answer 3

@ChaosMageKing How many numbers are on the die?

Answer 4

I understand the whole 1/6 of rolling a 5 and then a 1/6 of rolling a 2. My issue is with the combing thing to get the probability for that sequence of events.

Answer 5

the two events are independent, so you multiply the two probabilities

P(rolling 5, then 2) = P(rolling a 5 AND rolling a 2)

P(rolling 5, then 2) = P(rolling a 5)*P(rolling a 2)

P(rolling 5, then 2) = (1/6)*(1/6)

I'm sure you see what to do from here

Answer 6

Ahh, thanks. My mind doesn't do probability well. Ironic given that I play the stock market quite well.

Answer 7

you're welcome