Question

Select all pairs of numbers that have a least common multiple of 18.

2 and 6
3 and 6
2 and 9
6 and 9
6 and 12

Answer 1

2 and 9
6 and 9
would be have the least common multiple of 18

Answer 2

Answer: Third and Fourth options are correct.

Explanation:

Since we have given that

L.C.M. should be 18.

As we know that

Least common multiple of 2 and 6 is 6

Least common multiple of 3 and 6 is 6

Least common multiple of 2 and 9 is 18

Least common multiple of 9 and 6 is 18

Least common multiple of 12 and 6 is 12

Hence, Third and Fourth options are correct.