Program for Calculating - (Any 4 from 6) (Any 3 from 6) (Any 2 from 6)

Question

Hi I am using QB64 the simple BASIC programming language although the example if given may work in many languages ?
And I am trying to make a program that will Calculate (Any 4 from 6) (Any 3 from 6) (Any 2 from 6) and then save the results to a .txt file
It's easy to Calculate (Any 1 from 6) or (Any 5 from 6) I just need the rest and How to do it ?

Cheers! :)

Answer 1

Are you asking, in how many different ways can you pick 2 elements out of 6?

That would be the binomial coefficient, also called "n choose r", or nCr.

You calculate it like n!/(r! * (n-r)!)

Where n! is the factorial of n, for example
5! = 5*4*3*2*1 = 120.

In your case that would be `6 choose 2`, `6 choose 3`, etc.

Answer 2

Please don't use the Relevant Tags section to write the question copy.
Hope you understand 👍