Question : The average of T₁ and T₂ is 15. The average of T₃ and T₄ is 35. What is the average of T₁, T₂, T₃, and T₄?

Option 1: 24

Option 2: 30

Option 3: 28

Option 4: 25

Question : What is the Highest Common Factor of 25, 15, and 75?

Option 1: 7

Option 2: 15

Option 3: 25

Option 4: 5

Question : Find the ratio of the LCM of 44, 10, and 5 to the HCF of 50 and 75.

Option 1: 15 : 2

Option 2: 45 : 7

Option 3: 50 : 3

Option 4: 44 : 5

Question : Find the HCF of $\left(4^{315}-1\right)$ and $\left(4^{25}-1\right)$.

Option 1: $1$

Option 2: $\left(4^{25}-1\right)$

Option 3: $1024$

Option 4: $1023$

Question : What is the LCM of 15 and 25?

Option 1: 25

Option 2: 105

Option 3: 75

Option 4: 125