Permutations or to ‘perm’ selections, is a way of combining choices in the multiple bets. For example, if you selected 3 choices (X, Y and Z) you can combine or ‘perm’ every possible double. In that case all the possible doubles are XY, XZ and YZ totalling in three bets. Permutation calculators can help gamblers to better understand their bets and permutation betting.
"A joy to use and easily customised to my own requirements."