What is the riddle which can be asked all day with a different correct answer each time.

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

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

What has many teeth, but cannot bite?

A man dies of old age on his 25 birthday. How is this possible?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Buy me, smell me or deliver me, I do not change.

Who am I?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?