It is -987. The smallest positive 3-digit integer with unique digits is 102.
45825
The answer is a negative or positive integer with one or two digits.
The largest composite integer before 100 is 99 - its positive integer factors are 1, 3, 9, 11, 33, 99.
997 is the largest 3-digit prime number.
1
The set of positive integers is {1, 2, 3, 4, 5, ...}. Because the values approach positive infinity there is no largest positive integer. If you pick any positive integer, you can always create a larger one by simply adding 1 to it. So there can be no largest positive integer.
-3
It is -987. The smallest positive 3-digit integer with unique digits is 102.
45825
The greatest 4 digit integer divisible by 3 (and therefore a multiple of 3) is 9999.
The largest factor of any positive integer is the number itself.
The first 3 digit integer being a positive multiple of 30 is 120. The final 3 digit integer being a positive multiple of 30 is 990. 990 - 120 = 870. 870 ÷ 30 = 29 But, as 29 is the difference between the two limits and the limits themselves are included then there are 29 + 1 = 30 such numbers.
The answer is a negative or positive integer with one or two digits.
The largest composite integer before 100 is 99 - its positive integer factors are 1, 3, 9, 11, 33, 99.
Let me first re-phrase your question: What is the number of (positive) integers less than 10000 (5 digits) and greater than 999 (3 digits)? The greatest 4 digit integer would be 9999. The greatest 3 digit integer would be 999. Let's do some subtraction: 9999 - 999 = 9000 This works because as we count up from 999, each positive integer encountered satisfies your requirements until reaching 10000.
9*9*9 = 729 ways.