I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I am white when I am dirty, and black when I am clean. What am I?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

10+10 and 11+11 can give you the same answer.

Explain how?

In the image below, can you find the value of an angle(y)

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

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?