What is the measure of the angle formed by the hour and minute hand when the time to 10' O clock? 

A book can be read in 40 days if 7 pages are read every day. If the book needs to be read in 8 days. How many pages should be read every day? 

Who developed Polio vaccine?

Select the correct set of symbols:
34  16  4  12  = 26

If secθ – tanθ = 1/3 what is secθ + tanθ?

The mean of four different observations is 17.5. When a new observation whose value 20 is added, what will be the new mean?   

Which country celebrates its Independence day on January 4th? 

What is the point on the lever which does not move called?