dice rolling problem

[Paul Tourigny]

If you roll 2 dice 10 times, what is the probability of getting doubles 3 time? Or in general, what are the probabilities of getting n doubles on m rolls of 2 dice? I would like to see the equations used to attain these answers.
Thank you.

[Barry Schwarz]

On Fri, 29 Dec 2006 22:58:38 -0800, "Paul Tourigny"

Post by Paul Tourigny
If you roll 2 dice 10 times, what is the probability of getting doubles 3 time? Or in general, what are the probabilities of getting n doubles on m rolls of 2 dice? I would like to see the equations used to attain these answers.

Assuming you meant exactly three times and not at least three times -

What is the probability of getting doubles on a single role?

What is the probability of getting doubles on the first three rolls?

What is the probability of not getting doubles on the next 7 rolls?

How many different ways can you pick the three rolls of the ten which
should get the doubles?