An infinite number if you can use positive and negative numbers.
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Well honey, the numbers between 99 and 3000 are inclusive, so you gotta count 'em all. To find out how many three-digit numbers there are, you subtract the first three-digit number (100) from the last three-digit number (999) and add 1, giving you a grand total of 900 three-digit numbers. So, buckle up and start counting, darling!
Well, friend, when you add two two-digit numbers together, the sum will always be a two-digit number or a three-digit number, not a four-digit number. It's like mixing different colors on your palette - you'll get a beautiful new shade, but it won't be something completely different. Just keep adding those numbers together and creating something wonderful!
9,000,0009,999,999 is the last 7 digit number1,000,000 is the first 7 digit numberwhen you subtract the first from the last and add one you get the above answer.
Since the number 866 is not divisible by 3, this is impossible. The three numbers which differ by 1 and add to make 866 are: 287.6 recurring (that is, 287.6666...) 288.6 recurring 289.6 recurring
There is an infinite number of ways three numbers can have the sum of 11