There are 9*8*7*6 = 3024 permutations of the numbers.
If you don't care about the order the numbers are in, that total will be divided by 4! = 24 to give 126 different combinations.The first few would be 1234, 1235, 1236, 1237, 1238, 1239, 2345, 2346The last few would be 5679, 5689, 5789, 6789
If you don't care about the order the numbers are in, that total will be divided by 4! = 24 to give 126 different combinations.The first few would be 1234, 1235, 1236, 1237, 1238, 1239, 2345, 2346The last few would be 5679, 5689, 5789, 6789