I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What has lots of eyes, but can’t see?

What happened when the wheel was invented?

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

John was drowned by he was not wet. How?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

How many triangles are there in the picture below?

If six children and two dogs were under an umbrella, how come none of them got wet?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?