Announce the V group, group number 7-3-7-6-8-8-3-5-7. 【Mensa Club Starting Branch】

Joining conditions: more than 1,000 followers.

After joining the group, find the management screenshot and verify the fan value.

Readers who do not have enough followers can add the general group: 7-0-6-8-0-0-0-5-8-9. 【Top Academic Panels】

Repeat the group question:

X1+X2+2X3-X4=0

2X1+X2+X3-X4=0

2X1+2X2+X3+2X4=0

The rank of the coefficient matrix of this system of equations is the answer to joining the group!!

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Here are the highlights!!!

Readers' Welfare Activities: The 1st Quiz Winning Competition.

Purpose: To give back to the readers' support, and exercise everyone's brain power, and strive to create the next strongest brain, on the stage of the world's brain competition, to win glory for the country!

Organizer: Well, it's me, the man who is a top student - the author's fungus!

Specifically: To make a long story short, to put it simply, I will have a title in the "Author's Words" section of a certain chapter (which one is uncertain) every two or three days. Then, I'll have a section at the end of the chapter. Let's just write the answer in this chapter.

Rules: (1), In this chapter, the book friend who answers correctly and answers correctly is the first to get a reward.

(2) Each person cannot answer more than twice, and even if the answer is correct after two times, it will be invalid.

(3) It is forbidden to maliciously brush the building, otherwise it will be directly banned.

(4) Some questions not only need to give the correct answer, but also need to give the steps to solve the problem. Otherwise, it is considered a wrong answer. I will indicate the questions that require the steps to solve the problem.

(5) The answer must be made in the chapter of the prescribed paragraph, and the answer in other paragraphs will be deemed invalid.

(6) This activity is only for the starting point readers. Readers who are in other genuine channels or watching pirated versions, if they want to participate, download the genuine version of the starting point APP to read.

(7), there are some topics that may not be described with words alone, so I will post the topics in the form of pictures in the V group.

Rewards: The winners of each phase will receive 8.88 yuan in red envelopes !!! 8.88 yuan!!

At the end of each session, the top three book lovers with the highest number of awards will receive a mysterious reward.

How to receive the award: On the second day of each question, I will explain in the official chapter who the winning book friend of the previous issue is. Then, the book friend enters the group to chat privately with me to receive the red envelope.

The prize can be claimed within one day. That is, 24 hours after I said in the chapter, "xxx got the red envelope of the last issue". If no one receives it after the time has passed, I will post the red envelope as a benefit in the group.

Uh-huh, finally, finally!

The organizer reserves the right to interpret this event!

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Spoiler alert, the next chapter has the title of the first issue, welcome to challenge it!