Question

.Two numbers have prime factorizations of 2 2 · 3 · 5 and 2 · 3 2 · 7.

Which expression can be used to find their least common multiple?

23 · 33 · 5 · 7
2 · 3
22· 32
6 · 2 · 3 · 5 · 7

Answer 1

where there are factors common to both use them only once
so
LCM = 2*3*2*5*7