- Maths experts – Factorial question
Here, the internet can do it for you!Posted 4 years agoMoreCheeseGromitSubscriber
I have a maths issue which I think can be solved with factorials. But it’s a long time since I used them for anything practical and Internet searches just seem to cover simple scenarios.
Anyway, I have all the letters of the alphabet A-Z (just in upper case) and all 10 digits 0-9. So a total of 36 characters in total.
How many 4 characters combinations exist using these 36 characters
e.g. Starting with
Any ideas? Is it possible with factorials or am I using the wrong sort of Maths?
ThanksPosted 4 years agoCharlieMungusMember
True formthe factorials if you can use each character only once. Imaginge you have only one character, this could have 36 values. Then if there are 2 characters, then for every character there are 35 possibilities for the second character for everyone of those 36 first characters. Sow we can then repeat each ot these with 34 possible third characters, hence 36 x 35 x 34 etc…Posted 4 years ago
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