61
An on-line prime number chart ended at 10007. There are many more charts available for download. So the answer is that there are many five digit prime numbers.
120
1 The largest five-digit number is 99999 and the smallest six-digit number is 100000, so the difference is one. If you're just looking for an answer to a homework question, that's all you need. For the brainy: Suppose the answer was greater than one. That would mean that there are one or more numbers between the largest five-digit number and the smallest six-digit number that cannot be written with either five or six digits. Either they would have to be written with four or fewer digits, which would make them smaller than any five-digit number, or with seven or more digits, which would make them larger than any six-digit number. If the answer was less than one, it would mean that it would be possible to have a five digit number that was greater than a six-digit one. So the answer must be one.
9
It is 120 if the digits cannot be repeated.
With a total of 90,000 five digit numbers, we can conclude that there is 45,000 EVEN five digit numbers.
Five numbers (5, 6, 7, 8, 9) can be selected for each of the 5 digits. So, there are 5*5*5*5*5 or 55 or 3125 five digit numbers.
There are 600 such numbers.
There are five such numbers.
543210
99876
All five digit numbers have three digits. The smallest five digit whole number is 10,000
There are 45000 such numbers. None of them can be considered "the" five digit odd number.
The first five two-digit prime numbers are 11, 13, 17, 19, and 23.
There are 252 of them.
10389