With whole numbers, there are five ways.
4,5 & 12 is one of many solutions...
There are 676,000 ways to make the license plates.
Five numbers can be arranged in 5! = 120 ways.
30
Six ways. Eleven if you ignore commutativity and treat 2+10 as different from 10+2.
Three ways (I think).
6 ways: 931,913,139,193,391,319
There are 22 ways.
Three ways. 3 + 37 11 + 29 17 + 23
How about: 17+7 = 24, 19+5 = 24 and 11+13 = 24 as three examples
The first of the three can be any one of 6 numbers. For each of these choices, the second of the three can be any one of 5 numbers. For each of these choices, the third of the three can be any one of 4 numbers. So there are (6 times 5 times 4) ways to pull three numbers out of the six available = 120 ways. If you don't care what order you wind up with ... meaning, if 1-3-5 and 5-1-3 and 3-1-5 are all the same thing as far as you're concerned ... then there are only 20 different groups of three that you can wind up with.
With whole numbers, there are five ways.
30
4,5 & 12 is one of many solutions...
One... numbers
There are 676,000 ways to make the license plates.