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

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What is the fastest way to double your money?

What four weights can be used to balance from 1 to 30 pounds?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

I cannot talk, but I always reply when spoken to. What am I?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

what does this picture(rebus) riddle means ?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?