What is more useful when it is broken?

During which month do people sleep the least?

How many letters are in the alphabet?

I know a nine-letter word having only one vowel.
Do you ?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

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

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

How can you make number one disappear by adding something to it?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?