How many times can you subtract the number two from the number fifty?

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

When it's bad luck to meet a black cat?

what does this below rebus represent identXQQQQQME

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Can you find out the total number of triangles in the given figure?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

Who is that with a neck and no head, two arms and no hands? What is it?