What is the sum of the different positive prime factors of 550?

What is the sum of the different positive prime factors of 550?

Quiz

Answer/Solution

18

Steps/Work

I think answer is E: 27
550 = 55 * 10 = (5 * 11) * (2 * 5)
Sum of theDIFFERENTpositive prime factors = 2 + 5 + 11 = 18