Replace the question mark with the correct number in the below-given picture?

If eleven plus two equals one, what does nine plus five equal?

I have Rs.50 and I spend it in the way as below.

What is the word or phrase?

Find the missing number in the image below.

why number 8549176320 is one of a kind?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

What has a ring but no finger?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?