Question : The highest common factor of 108, 72, and 5$a$ is $a$. What can be the least common multiple of 108, 72, and $a$?

Option 1: 432

Option 2: 324

Option 3: 108

Option 4: 216

Question : The least common multiple of 48 and 64 is _____ times the highest common factor of 12 and 18.

Option 1: 28

Option 2: 32

Option 3: 24

Option 4: 16

Question : The least common multiple of 210, 336 and 504 is:

Option 1: 5040

Option 2: 3360

Option 3: 2100

Option 4: 4560

Question : If $p=\frac{5}{18}$, then $27p^{3}–\frac{1}{216}–\frac{9}{2}p^{2}+\frac{1}{4}p$ is equal to:

Option 1: $\frac{4}{27}$

Option 2: $\frac{5}{27}$

Option 3: $\frac{8}{27}$

Option 4: $\frac{10}{27}$

Question : The least common multiple of a and b is 42. The LCM of 5a and 11b is:

Option 1: 2310

Option 2: 4620

Option 3: 210

Option 4: 462