How many odd factors does 160 have?
Choose the most appropriate option.
A) 2  B) 4  C) 5  D) 6  E) 8
Start with the prime factorization: 160 = 2*5   For odd factors, we put aside the factor of two, and look at the other prime factors.   set of exponents = {1}   plus 1 to each = {2}   product = 2   Therefore, there are 2 odd factors of 160.   2nswer: 2.
<result>A</result>
How many odd factors does 160 have?