Question

what is thesum of greatest common divisor and the least common multiplier?
a)432
b)78
c)66
d)42

Answer 1

lcm =
a.432 = 2 × 2 × 2 × 2 × 3 × 3 × 3
b.78 = 2 × 3 × 13
c.66 = 2 × 3 × 11
d.42 = 2 × 3 × 7