How many factors of 990 are odd numbers greater than 1? Answers
A) 3  B) 4  C) 5  D) 6  E) 7
prime factors of 330 are 2^1,3^2,5^1 and 11^1   total divisors = (power if a prime factor+1)   total no. of odd factors(3,5,11) = (2+1)(1+1)(1+1) =12   since we need odd divisors other than 1 =&gt;12-1= 
<gadget id="calculator">12-1</gadget>
<output>11</output>
11 odd divisors   3 is the answer
<result>A</result>
How many factors of 990 are odd numbers greater than 1?