That depends entirely on the number of digits each number is permitted to have !
Chat with our AI personalities
By making a number tree that could have as many as 1,000,000 combos.
Through the magic of perms and coms the answer is 729
There are 12 such numbers.
The number of combinations of six numbers that can be made from seven numbers will depend on if you can repeat numbers. In all there are over 2,000 different numbers that can be made.
24 of them.