When 1=5, 2=25, 3=125, 4=925. Ask 5=?

1 is equal to 5, no matter what 2, 3 or 4 is equal to, 5 is equal to 1

The person upstairs is overthinking

This question has its origin Not small:

Chen Ran is an associate professor in the mathematics department of a well-known university. A student called and asked a question: If 1=5, 2=25, 3=125, 4=925, then, 5=?

Chen Ran read the question carefully, hoping to find out The secret is ultimately the law of powers. 1 is equal to 5 raised to one power, 2 is equal to 5 raised to the second power, 3 is equal to 5 raised to the third power, and so on. Then 5 is 5 raised to the fifth power, which should be equal to 625. , but if this is the case, 4 should be equal to 625, not 925.

"Look at the question carefully. 4 should equal 625, not 925." Chen Ran dialed the student's phone number.

"4 is indeed equal to 925. This is an International Mathematics Olympiad question. There should be no problem with the question itself." The student checked the original question and said with certainty.

Chen Ran thought hard for another half an hour, but still had no results, so he decided to ask for help from his graduate tutor, Professor Zhu, who is now a nationally renowned mathematics expert. Professor Zhu wrote down the question and said he would call him back as soon as the answer was found.

Forty minutes later, Professor Zhu called: "Did you get the question wrong? 4 should be equal to 625, not 925! In this case, 5 should be equal to 3225!"

< p> "Teacher, the question is indeed 4 equals 925. I was not mistaken." Chen Ran replied.

"If this is the case, then this topic should be a new topic that needs urgent research in the digital field and deserves our in-depth research and discussion." Professor Zhu said excitedly.

After putting down the phone, those numbers kept lingering in Chen Ran's mind, and he sat alone in the living room in a daze. When his wife Xiaoli came back from the night shift, the couple took the topic and immersed themselves in studying it together.

"Mom, are the supper ready?" The son, who is in the sixth grade of elementary school, came out of the room.

"Wait a moment, mom is busy now." Xiaoli said.

The son came forward and saw that it was a math question. He glanced at it and said disdainfully: "What's so interesting about such a simple question?"

"Simple." ?A person's small tone is not small. Can you tell me what 5 equals?" Chen Ran said unhappily.

"1 equals 5, no matter what 2, 3 or 4 equals, 5 always equals 1. I really don’t know how you were rated as an associate professor. The biggest problem you adults have is that you like to treat simple things It’s very complicated to think about,” the son said with a contemptuous smile.