There are forty elephants and they have forty-fore heads. How can this be possible?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

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

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A man escapes from jail using help from his girlfriend. The investigators suspect four girls of being the man's girlfriend.

Out of those four girls, one is his girlfriend who is lying. Two of the girls are completely innocent and are speaking the truth. One of the girls is the man's sister who is helping the girlfriend lie. Following are the statements from all four of them:

Ariana: "Myrna is his girlfriend."
Jane: "Angelina is lying."
Angelina: "Ariana is lying."
Myrna: "Jane is not his sister."

Can you find out who is the man's sister among them?

By moving just one matchstick, you need to make the below statement true. Can you do it?

What kind of storm is always in a rush?

Can you count the number of triangles inside a triangle?

Can you count the number of children in the picture below

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?