How many odd numbers between 10 and 900 are the squares of integers?  Choose the correct choice from the following choices:
A) 12
B) 13
C) 14
D) 15
E) 16
The square of an odd number is an odd number:   10 &lt; odd &lt; 1,000   10 &lt; odd^2 &lt; 1,000   3.something &lt; odd &lt; 31.something (by taking the square root).   So, that odd number could be any odd number from 5 to 31, inclusive: 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, and 31.   13 numbers.   Answer: 13.
<result>B</result>
How many odd numbers between 10 and 900 are the squares of integers?