Must change combination on my luggage ......
Technically the series of numbers on your luggage lock is a permutation and not a combination. If it is the latter it undermines the security of your lock.
Combination = A specific series of numbers/letters in any order (so 1,2,3,4 and 4,3,2,1 are one combination)
Permutation = A series of numbers/letters in a specific order (so 1,2,3,4 and 4,3,2,1 are two different permutations)
The Lotto is a combination draw, so it doesn't matter what order the numbers come out of the machine in. Hence the odds of winning for one line is...
6/49 x 5/48 x 4/47 x 3/46 x 2/45 x 1/44 = 1 in 13,983,816
If it were permutation based it would be....
1/49 x 1/48 x 1/47 x 1/46 x 1/45 x 1/44 = 1 in 10,068,347,520