Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

If eleven plus two equals one, what does nine plus five equal?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Which word does the below Plexor means ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Can you count the number of triangles in the given figure?

Which of the below owl is odd one out?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?