What's the only room from which no one can enter or leave

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Why did the Girl throw the butter out of the window?

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?