Can you convert the number zero(0) into a positive number using just one mathematical operator ?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

John decided to give his bike 3 coats of paint. Which coat would go on the first?

Why blonde cannot dial 911?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Why do Chinese men eat more rice than Japanese men do ?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

How many sides does a circle have?