Chapter 103

"Today, let's do an interesting math problem!"

As he spoke, old Tang drew a 5 * 5 grid on the blackboard.

Lao Tang pointed to the Gong Ge on the blackboard and said, "the requirements of the title are like this. In this 5 * 5 gonggeli, fill in 1 ~ 25, a total of 25 numbers. Make the sum of his five numbers equal in every row, column and diagonal line

"Do you understand the title? It's only when the sum of 12 groups of numbers in each row, column, diagonal line are equal to complete the problem. " Old Tang continued with a smile. "It's a question that sends out thoughts. It doesn't need to be a complicated problem-solving step. You can try it. The first to do, will have the priority to get the mathematical simulation volume I just out of the right! And my own free reading opportunity

The corner of the mouth of the crowd.

Teacher, you reward some Fresh and refined!

Although they did not dare to be interested in the reward proposed by Lao Tang, it did not stop them from seeking knowledge about this topic.

25 consecutive numbers, fill in a 5 * 5 square.

According to the possibility, there are 1.5511210043331 × 10 ^ 25 possibilities.

If one tries, it is definitely a lifetime series.

Therefore, we must find a new way. Think with divergent thinking.

Simple problem-solving methods must exist, it depends on whether they can think of it.

Mu Leng frowned and looked at the 5 * 5 palace grid on the sketch paper. There's no clue in my head.

"What is the law?" Muran's whisper.

Su Xiaoxiao, sitting on the side, did not hold the solution to this problem. He blinked his big watery eyes and looked at Mu Leng.

"Mulen, do you have any ideas?" Su Xiaoxiao looks forward to it.

Mu Leng smiles bitterly and shakes his head, "the head is a mess, there is no clue at all."

"Well? Is the problem so difficult? " Su xiaoxiaoqingyi, as a primary school slag, all the questions are difficult, so there is no feeling.

See Mu Leng said it was very difficult, that should be very difficult! She can only look up to her.

"Fortunately, I didn't waste my time." Su Xiaoxiao praised her wit.

Others say I am melon, in fact, I am not melon at all!

Su Xiaoxiao held her cheek in her small hand, and her eyes were shining and said, "ah, Mu Leng, do you think Cheng Nuo can solve this problem?"

"He..." Mu Leng thought of Cheng Nuo's surprise to himself recently, and gave him a light smile, "he should be able to do it."

…………

On the platform, old Comrade Tang sat squinting.

Holding a thermos cup in one hand, blowing hot air gently through the mouth.

And the thermos cup is not tea, but wolfberry, angelica and other nourishing stomach Chinese medicine.

Old Tang Mei Zizi's drink, heart can't help reciting a poem.

Middle aged people have to, soaking wolfberry in the heat preservation cup.

Chinese wolfberry is hard to resist the urge of time, add some Angelica in the cup.

Danggui is hard to resist the knife of time. Ginseng and pilose antler are served with small roast.

Although small cooking is good, velvet antler is expensive, leek and kidney flower are more affordable.

Although Chinese chives and kidney flowers are affordable, Huiyuan Shenbao still has to be fed.

Huiyuan kidney treasure is not enough flavor, bullwhip and deer whip can reach the stomach.

The bullwhip and the deer whip are a little crazy, and they have to eat the splendid.

Cough, it's far away. It's a little far away

Old Tang put the thermos cup on the table, opened his squinting eyes and looked at the people under the platform.

The students are actually buried in the calculation. Some people have already filled three or four sheets of paper.

Muran's side, also had a little thought.

Since the sum of each row and column is equal to a fixed number. This fixed number is easier to calculate. A total of 25 numbers from 1 to 25 are added up and divided by 5, which is the fixed number - 65!

And then

Then Mullen got stuck! It took five or six minutes without any progress.

A very tragic ending.

On the platform, old Tang looked around with satisfaction for a week.

All of a sudden, when he glanced at a corner, his face was a little unnatural.

Because he clearly saw that Cheng Nuo, sitting in the corner, was in recite words!

Old Tang remembers that he said to Cheng Nuo that he could review other subjects after finishing his assigned tasks in mathematics class.

Is Has Cheng Nuo worked out the problem?

No way! If you don't know that rule, there's no reason to think of the right answer in such a short time!

Old Tang was puzzled.

Lao Tang stood up and clapped his hands to attract people's attention.

"Did you do it?" Old Tang asked with a smile. "If you do it, you can come up and try it."Most of them are shaking their heads.

Old Tang gradually set his eyes on Cheng Nuo.

Cheng Nuo, who is reciting words in a low voice, suddenly feels chrysanthemum tight. As soon as he looks up, he sees his smiling face.

"Cheng Nuo, have you come up with an answer to this question?" Old Tang said with a smile.

"Well, if other students do it, give him this precious opportunity. A set of math papers doesn't mean anything to me. Because I am in the field of high school mathematics, there is no room for improvement Cheng Nuo shook his head and began to sigh.

All the students in the class + Old Tang said

This force I'm really impressed by what I'm pretending to be!

Give you 1024 likes, plus a website!

Old Tang coughed unnaturally. After a few seconds, he regained his normal manner. He said to the whole class, "besides Cheng Nuo, do you still know this question?"

At this time, the whole class really wanted to say "yes". Good hit Cheng Nuo in the face.

But how

I can't keep up with my IQ!

Think of the scalp is almost fried, but still Did not come up with any feasible solution.

They all feel now, their head and Cheng Nuo's head is not the same brand!

Why is Cheng Nuo's brain so smart and wise

And their own brain, it is better to use the son!

Seeing no response, it was also within the expectation of Lao Tang. It is normal that no one has worked out this problem for more than ten minutes.

As for Cheng Nuo

Well, this guy is not in the normal human sequence.

"Since no one raised their hands, you can come up and do it." Old Tang said helplessly.

“OK！”

Cheng Nuo smiles faintly and gets up from his seat.

Walk on the platform with incomparable strides.

If there is another BGM at this time, it will be even better!

"Invincible is how, how lonely, how invincible is, how empty ~ independent in the cold wind, let the cold wind blow through ~"

How about this BGM song!

Old Tang made a gesture of invitation to Cheng Nuo.

Cheng Nuo picked up a piece of chalk with a faint smile on his mouth.

"Isn't it the Rubik's cube matrix? Simple! "

……………………

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