8.
The length, breadth and height of a room are 6 m 30 cm, 2 m 0 cm, and 5 m 70 cm respectively. What is the length of the longest rod which can measure the dimensions of the room exactly?
15.
25, 32, 481 people live in state A. 2, 82, 745 people moved from state B to state A and 18, 452 people moved from state A to state C. How many people now live in state A?