Can you find out the missing number in the grid?

Can you count the number of triangles in the given figure?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Can you name four days which start with the letter 'T'?

Count the number of lines in the image below ?

What is more useful when it is broken?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

A man dies of old age on his 25 birthday. How is this possible?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?