How many factors of 220 are odd numbers greater than 1?
Options.
A) 3	B) 4	C) 5	D) 6	E) 7
When factorized, 220 has 4 prime factors. Of these prime factors 2 are odd and 2 are even. Hence total number of odd factors is 2*2(4), which includes 1. The total number of odd factors greater than 1 are 3.(option 3)
<result>A</result>
How many factors of 220 are odd numbers greater than 1?