0
If you choose to include 0 as a whole number (debatable it is only theoretical and not existent) then 99 (01, 02, 03...) but if you include 00 then it is 100. If you wish to include negative numbers as these also are only two digits then it is 199 (assuming you included 00, if not then 198). But even after all of that and you didn't include 01, 02... and -01, -02... then it would be 180.
And finally, 0 is another answer because 0000036.00000000000000 is still a whole number but has an infinite number of zeros on the end and in front of the '36'. There is a complex answer to a simple question, enjoy!
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How many digits are there in the numbers 100-425?
525
How many whole numbers have exactly 3 digits hint 999 is the greatest whole number with three digitsint999?
The smallest such number is 100, the largest is 999, so the size of this set is:999 - 100 + 1 Another way to solve this: You have: * 9 options for the first digit * 10 options for the second digit * 10 options for the third digit Multiply all these numbers together.
852 digits used to number the pages of a book how many numbered pages does the book have?
There are exactly 320 pages in 852 digits.
How many four digit whole numbers are there such that the thousand digit is odd the hundreds digit is even and all four digits are different?
5*5*4*4 = 400
How many three digit numbers are there such whose digits sum is odd?
450.
