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

How can you leave a room with two legs and return with six legs?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

What Deficiency does the below rebus represent?

VIT_MIN

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

Can you make four (4) nines (9) equal 100?

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

If a wheel has 54 spokes, how many spaces are there between the spokes?

In which direction should the missing arrow point?

Look at the picture and find out which square is not linked with any of the other squares.