#### Answer

True

#### Work Step by Step

The prime factored form of 8 is:
$8=2\times2\times2$
The prime factored form of 9 is:
$9=3\times3$
The prime factored form of 18 is:
$18=2\times3\times3$
Since the least common multiple (LCM) contains each different prime factor as many times as the most times it appears in any one of the factorizations, we obtain:
LCM$=2\times2\times2\times3\times3=72$
Therefore, the question statement is true.