# A mathematician wrote a 2-digit number on a sheet of paper.

Riddle: A mathematician wrote a 2-digit number on a sheet of paper. When he turned the sheet upside down, the number decreased by 75. What was the number?

Answer: Riddles have always been a popular form of brain training fun, but now thanks to the crash, people are giving more chances than ever.
You may have seen the “A mathematician wrote a 2-digit number on a sheet of paper” riddle on the Internet or on social media and have been struggling with its answer for a while.

This riddle made social media and internet users think a lot and prompted them to discuss what the answer might be.

#### A mathematician wrote a 2-digit number on a sheet of paper Riddle

“A mathematician wrote a 2-digit number on a sheet of paper. When he turned the sheet upside down, the number decreased by 75. What was the number?”

This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities.

The answer to the A mathematician wrote a 2-digit number on a sheet of the paper riddle is a 75.

16 when you turned the sheet upside down the number get 91 it (16) decreased 75.

Some of the numbers that are still valid if you turn them upside down are 1, 6, 9, 8. A combination of two digits is 91 as the decrease we want to achieve is 75. 91-16=75