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

Can you solve this picture maths equation?

I have an eye but still cannot see.

Who am I?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

During which month do people sleep the least?

John was piloting a plane behind a car but was never able to overtake it. Why?

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 has to be broken before you can use it?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?