Arithmetic Reasoning - General Questions

19 poles are fixed in a straight line, 5 m apart. What is the distance between the first and the last pole?

In a farm there are hens and cows. If the heads number 45 and the legs number 134, how many hens are there?

A clock takes 36 seconds to strike 7. How long will it take to strike 14?

In a farm there are hens and cows. If the heads number 36 and the legs number 92, how many hens are there?

A boy buys 6 notebooks at Rs. 14 each and pays with Rs. 100. How much change does he get?