Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

There is a dressing drawer which contains the following coloured socks in pairs: Purple, Magenta, Crimson, White, Yellow and Turquoise. Now, the socks are paired and each pair is together in the matching set. There is no light in the room and you open the drawer and pick up a pair. Then, without noticing any colour, you keep them back and pick them up again.

Can you calculate the probability that the pair of socks was Yellow both times?

John was piloting a plane behind a car but was never able to overtake it. Why?

Which fur should we be getting from the Lion?

Can you find the 09 errors in the picture below?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?