The doctors avoid prescribing steroid tablest most often. Why?
What different criteria would you choose to classify people that you meet often?
Suppose that five people are ill during the first week of an epidemic and each sick person spreads the contagious disease to four other people by the end of the second week and so on. By the end of 15th week, how many people will be affected by the epidemic?
Why do some people have curly hair.
Why are family planning methods not adopted by all people of our country?
A simple microscope using a single lens often shows coloured image of a white source. Why?
