The number of R-combinations in a set of N objects is C= N!/R!(N-R)! or the factorial of N divided by the factorial of R and the Factorial of N minus R. For example, the number of 3 combinations from a set of 4 objects is 4!/3!(4-3)! = 24/6x1= 4.
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Could you generate a complete set of 6 number combinations from 45 numbers ?
If there are n different objects, the number of permutations is factorial n which is also written as n! and is equal to 1*2*3*...*(n-1)*n.
A general form for finding a given number of combinations for a chosen sub-set of numbers from a set is Cr(n, r) = n!/r!(n-r)!
By making a number tree that could have as many as 1,000,000 combos.