Friend, there is free iced tea here! Get rid of fatigue and send refreshments! Probability; possibility

I visited the weather station and saw many latest weather forecasting instruments. After the visit, I asked the stationmaster, "You said there was a 75% chance of rain. How did you calculate it?" Without much thought, the stationmaster replied, "That is to say, there are four people here, and three of them think it will rain."

What is pi?

Mathematician: Pi is the ratio of circumference to diameter. Engineer: Pi is about 22/7. Computer programmer: Under double precision, Pi is 3. 14 1592653589. Nutritionist: You die-hard math minds, pie is a delicious and healthy dessert!

It is proved that all odd numbers greater than 2 are prime numbers. Different professionals have given different proofs: Mathematicians: 3 is a prime number, 5 is a prime number, and 7 is a prime number. According to mathematical induction, all odd numbers greater than 2 are prime numbers. Physicist: 3 is prime, 5 is prime, 7 is prime, 9 is experimental error, 1 1 is prime. 5 is prime, 7 is prime, 9 is prime, 1 1 is prime, ... Computer programmer: 3 is prime, 5 is prime, 7 is prime, 7 is prime, ... Statistician: Let's try some random numbers: 18. Mathematicians, biologists and physicists A mathematician, biologist and physicist sat at an open-air coffee table and looked at the people coming and going in the shop across the street.

First, they saw two people walk into the shop. After a while, they found three people coming out. Three friends expressed their views on their major: physicist: This proves the uncertainty principle. Biologists: These people reproduce themselves. Mathematician: If one more person enters this shop now.