1. Find the largest number that divides 15 and 17 without leaving the remainder. 2. The capacity of the two containers is 15 liter and 25 liters. Find the capacity of the largest measuring cup that can be used to fill both the containers.

3. Find the greatest number which leaves no reminders when it divides 44 and 121.

4. Sunita has two ribbons of length 25 inches and 35 inches. She wants to cut these ribbon into strips of equal length. What is the longest Possible length for the strips?