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?

What goes up but never comes down?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Can you find out the missing number in the grid?

Which flower has two lips?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.