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

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

How can you take 2 from 5 and leave 4?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

What is the riddle which can be asked all day with a different correct answer each time.