The HCF and LCM of two positive integers are 35 and 385 respectively. If one of the integers is 77, what is the other integer?

Find the ratio of the LCM and the HCF of 5, 25 and 30. 

(A) 1 : 6 

(B) 30 : 1 

(C) 1 : 30 

(D) 6 : 1 

Find the HCF of 3, 7 and 15. 

(A) 7 

(B) 15 

(C) 3 

(D) 1 

Find the G.C.F and L.C.M of $20$and $28$.

1. $20, 280$
2. $5, 280$
3. $10, 140$
4. $4, 140$

What will be the HCF of $\frac{2}{3}, \frac{8}{9}$ and $\frac{64}{81}$?

The LCM of two numbers is $210$. If their HCF is $35$ and one of the numbers is $105$, find the other number: