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

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

81 x 9 = 801. What must you do to make the this equation true?

What word is represented by this rebus?

Solve the rebus riddle in the picture below.

Spot what is wrong here in below Picture?

What number do you get when you multiply all of the numbers on a telephone's number pad?

When does a USA Potato change its nationality?