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

Why Aeroplane windows are round?

Can you replace the question mark with the correct number in the below table sequence?

What can you catch but never throw?

What goes through cities and fields, but never moves?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

I have teeth but i don't bite. Who Am I ?

Rearrange the letters in "new door" to make one word.

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?