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?

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?

How many sides does a circle have?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What jumps when it walks and sits when it stands?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

If you say my name, I will no longer exist. What am I?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

How can you take 2 from 5 and leave 4?