A man buys an article for 10% less than its value and sells it for 10% more than its value. His gain or loss percentage is-
Which of the following is greater than 1 ?
A train with a length of 150m long, takes 30 seconds to cross a 500m long bridge. How much time will the take to cross a 370m long platform?
In a party 15 people shake their hands with each other. How many times did the handshakes take place?