The number of marble slabs of size 20cm x 20 cm required to pave the floor of a square room of side 3 metres is :

A vendor bought 3 chocolates for 1 rupee. For how much per chocolate should he sell, to gain a profit of 50%?

Another name of variable line spacer is :

If P denotes ÷, Q denotes ×, R denotes +, and S denotes –, 

18 Q 12 P 4 R 5 S 6 = ?

Find out the odd man from the given words:

A tube has 10 meter length, 10 meter width and 5 meter height. What is the length of the longest tube which can be adjusted with in the tube ?