10000
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Take the smallest 6-digit even number, then subtract one from it.
The smallest 5 digit odd number is: 10001 The greatest 4 digit even number is: 9998 Subtracting 9998 from 10001 gives you 3.
12346
The smallest even 4-digit number using the digits 5, 7, 4, and 9 is 4579. To create the smallest number, we start by placing the smallest digit, which is 4, in the thousands place to ensure it is a 4-digit number. Since we need to make it an even number, the units place must be an even number, so we use 4. Placing 5 in the hundreds place and 7 in the tens place gives us the smallest even 4-digit number, 4579.
10000This is an even number, and the number immediately preceding it is 9999, which has only four digits.Hence it is the smallest 5-digit even number.Note that here we're not considering negative numbers. If we consider negative numbers, then the smallest 5-digit even number would be -99998.The number immediately preceding it is -99999, which is not even, and the number immediately preceding that is -100000, which has six digits.