Start at 100 and go on till you reach 999 then stop.
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There are 625 of them - too many to list.
468, 486, 648, 684, 846, 864.
2240
This is a problem involving combinations. We know we need a 4 digit number. So I'll write 4 blank spaces, to symbolize each digit. ___ ___ ___ ___ The number also has to be even. That means that the last digit must be even. (2, 4, 6, 8, 0) Your list of numbers is 1, 2, 3, 5, 6, 8, 0. How many numbers from this list will work in the last digit place? 2, 6, 8, 0. -- 4 numbers. ___ ___ ___ _4_ For the third digit, any number will work. We have 7 choices. ___ ___ _7_ _4_ for the 2nd digit, the same applies. any number from your list will work. ___ _7_ _7_ _4_ For the first digit, only 6 will work. if you put a 0 in the first digit place, it becomes a 3 digit number. _6_ _7_ _7_ _4_ Now, all we do it multiply these numbers together. 6 * 7 * 7 * 4 = 1176. This means, we can create 1176 unique 4 digit numbers that are even with the list of numbers available. 1000 1002 1006 1008 1010 1012 etc.
Any number with 2 numbers in it is a 2. Example: 95 They are numbers 10 - 99.