using factorial in probability question

[Tim Wessman]

(09-27-2017 03:25 AM)chromos Wrote:  btw. in your example, you'll get 0.706... in CAS after pushing ab/c button, [or you can type any number with decimal point to force CAS to "decimal" answer - see dot after first digit: 1. - 365! / ((365-30)!*365^30)]

Just press Shift-Enter to do an approximate evaluation. That is why it is the shifted enter operation.

The the original poster, you aren't getting a "number" several hundred numbers long, you are getting a fraction of two very, very, very large numbers.

Please take some time to understand the responses from people *WHY* the answers you posted are actually correct (each of them reall is!) and what actually is the difference between home/cas or approximate/exact. These are very important concepts in mathematical understanding and understanding them is critical in being able to understand math in general.

If nobody else posts on these topics, I'll try to get you a response tomorrow.