# Sum of a die

1. Oct 21, 2007

Hi,

I've looking in the internet but I can't find a straight answer.

The problem is this:

Suppose we have a 3-side die (faces marked 0, 1, and 2).

Are there general formulas to answer questions such as:

a) "After throwing the die 100 times, get the probability of the sum being 120"?
b) "After throwing the die 100 times, get the probability of the sum being greater or equal to 120"?

Any help is appreciated.

P.S. This is not homework, I'm too old to be a student ;-)

2. Oct 21, 2007

### EnumaElish

3. Oct 21, 2007

I saw the message and he/she doesn't have a complete answer.

4. Oct 21, 2007

### EnumaElish

Neither do I. What I can tell you is, "yes, there are such general formulas."

5. Oct 21, 2007

Yeah, I also found some formulas in the wiki http://en.wikipedia.org/wiki/Dice#Probability. However, I thought the problem were easier and with a nice formula like the binomial distribution.

Last edited: Oct 22, 2007