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

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Name a key which is hardest to turn.

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

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

Who always enjoys poor health?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?