What month of the year has 28 days?

Before Mount Everest was discovered, what was the highest mountain in the world?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

What demands an answer, but asks no questions

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?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

I make two people out of one. What am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

How can you write nineteen in a manner that if we take out one, it becomes twenty?