How many integers between 400 and 1000 are there such that their unit digit is odd?  Choose the correct choice from the following answers.
A) 250	B) 150	C) 300	D) 400	E) 450
There are 600 numbers from 401 to 1000 (inclusive).   Half of the numbers are odd, so there are 300 odd numbers.   The answer is 300.
<result>C</result>
How many integers between 400 and 1000 are there such that their unit digit is odd?