What word begins and ends with an E, but has only one letter?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Can you solve this picture maths equation?

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

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

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?

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

Which is the correct shadow of the bird?

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