Question : The LCM of two numbers is five times their HCF. If the product of the two numbers is 20480, then find their HCF and LCM, respectively.

Option 1: 46 and 230

Option 2: 48 and 240

Option 3: 64 and 320

Option 4: 56 and 280

Question : Find the HCF of $\frac{11}{25}, \frac{9}{20}, \frac{16}{15}$, and $\frac{10}{33}$.

Option 1: $\frac{1}{3300}$

Option 2: $\frac{1}{330}$

Option 3: $\frac{1}{33}$

Option 4: $\frac{1}{300}$

Question : Find the greatest number that exactly divides 15, 30, and 40.

Option 1: 3

Option 2: 40

Option 3: 5

Option 4: 15

Question : Find the HCF of 69, 96, and 99.

Option 1: 3

Option 2: 9

Option 3: 1

Option 4: 6

Question : Find the HCF of 364 and 724.

Option 1: 4

Option 2: 2

Option 3: 6

Option 4: 364