Question

Which two of the prime numbers below are factors of 247.
a.11
b.13
c.17
d.19

Answer 1

a) 247 ÷ 11 = 22 r.5 since there is a remainder it is not a factor

b) 247 ÷ 13 = 19 there is no remainder so this is a factor! The other factor is 19.

Answer: B, D