Jiang Shihan returned to his seat, ready to accept the teacher's 'test' with everyone.

Wu Fan touched his chin, felt the slight tingling sensation of his beard, and couldn't help but be distracted.

"Ah......h

When the students saw the teacher's 'pensive' appearance, they thought that Wu Fan was racking their brains to give them exam questions, so they couldn't help but pout and despise it.

"It'......s really hard for a teacher to think about a question for a student for a long time?"

Wu Fan came back to his senses and thought about it, "Just come up with a question, seeing that the scientific and technological level of their world is so low, it seems that it is not even as good as the industrial revolution period, and the calculation is definitely not good, emm...... That's you! old friend!"

"There is a rectangular pool with a bottom, 8 feet long, 6 feet wide, and 5 feet high, and there is a drain at the bottom of the pool at a rate of 80 square feet per hour;

(PS: For the sake of writing and reading, this book will unify the measurement and time units of the Magic Continent and the Earth in the future)

After asking, Wu Fan looked at everyone with a dark face, and secretly praised the math problems that he hated when he was a child, whether he can continue to fish in troubled waters in the future, and it depends on Math Jun to eat and wait for death!

Just as Wu Feng was lying comfortably on the chair, picking up the teacup and preparing to drink saliva to moisten his throat, Jiang Shihan stood up from his seat, looked at Wu Fan with a strange look on his face, and spit out a sentence,

"It only takes 2 hours!"

......

Wu Feng's movement of picking up the teacup froze, and the tea almost splashed to the ground.

From the time he finished talking about the question to Jiang Shihan's answer, it definitely didn't take more than half a minute.

"Are the children of the Magic Continent so good-looking?"

Wait, my scalp is a little numb, hasn't it been a long time.....

Jiang Shihan had an inexplicable expression on her face, she never expected that the topic that Teacher Wu had 'racked her brains' came up with was so simple? !

Although the Magic Continent is very backward in science and technology, it is roughly equivalent to the era of agricultural economy, but if you want to become a magician, the most basic condition is to have spiritual power far beyond ordinary people!

Because magic is to rely on mental power to unleash!

And what does the spiritual power that far surpasses ordinary people represent?

It represents faster computing power, stronger reaction ability, stronger thinking ability, and more active logical derivation ability than the average person......

Not to mention, the freshmen of the Star Magic Academy are the strongest among all the freshmen in the Tianchen Kingdom!

Maybe their calculation method is outdated and cumbersome, but with their strong mental power, it is not too easy to calculate the answer to this question!

The reason why they have not yet embarked on the road of rejuvenating the country through science and technology may be because they have focused on magic......

"Wait, I'll do the math a priori, don't fool me with an answer. ”

Wu Fan's old face flushed, just now he thought that this group of students didn't know how to calculate at all, so he didn't calculate the answer at all, and now he had to start calculating.

It's okay if you don't calculate, but when you calculate it, you find out: Mom! I can't figure out the answer!

So I picked up the chalk and listed the equations on the black book, and checked each step several times, and finally found that the answer Jiang Shihan said was correct!

And the time for a single pen calculation is far more than half a minute.

This contrast, this sour......

Jiang Shihan watched Wu Fan write the strange calculation formula on the blackboard, and became more and more disdainful of Wu Fan in his heart.

"It's such a simple calculation, the teacher can't even calculate it mentally, and it takes so long......"

"Teacher, there is one thing I don't understand about this question!"

Chen Yu raised his hand and asked.

"Oh, I'll just say, you can do anything, tell the teacher what you don't understand!"

Wu Fan found a 'step' and was about to go down.

"It's not about the answer, I'll figure it out at once. My question is about the question itself, why does this person have to fill water while releasing water? Isn't that a waste of time and a waste of water? Is there any profound implication?"

Chen Yu voiced his doubts.

......

Wu Fan was extremely crazy in his heart, and now he finally realized what it meant to 'lift a stone and shoot himself in the foot'.

"How do I know that he wants to fill water and release water at the same time?! I've been doing this since I was a child! Why do you ask so much? Why do you just make it? You talk a lot!"

"What else is the profound meaning? What is the meaning? Isn't it just to torture you better? How many people in reality would really do this?"

"I'm so angry, but I still have to explain with a smile, the baby is bitter, but the baby doesn't say ....."

"Teacher, are you listening?" Seeing that Wu Fan didn't respond to him for a long time, Chen Yu exclaimed tentatively.

"Oh, oh, I heard that, what, classmate Chen Yu, your question is very good!" Wu Fan came back to his senses and said,

"When we study a problem, we must not stick to the appearance, but we must discover its interior, its core, just like this question, most people make it and ignore it, only you, discover the fact that its practical significance is almost zero, this is very good! Your spirit of excavation is worth learning from!"

So in fact, the teacher did not ask this question to test everyone's calculations, but to think ability, this question is just an appetizer, not a question that the teacher really wants to ask. ”

Wu Fan tried hard to talk to himself, and a layer of dense sweat gradually appeared on his forehead.

Then I thought to myself: "If I had your questioning spirit when I was a child, I'm afraid ...... I'm afraid I won't live that long!"

"Hmm....... It's better to keep it simple!"

"I'll just say, how could such a simple question come from the teacher, it just wanted to encourage us to think about the problem!"

Zhou Xuanwen followed Wu Fan's words and said, but in fact, the corners of his mouth had already outlined a trace of arc, and said secretly: "Make up, continue to make up, you go to the casino every day, I see what ink you still have in your stomach!"

As everyone knows, this sentence invisibly inserted Wu Fan again.

But in general, the 'naïve' Wu Fan still felt that he was talking for himself.

Wu Fan, who didn't know the truth, sent a grateful look to Zhou Xuanwen, he cleared his throat, pondered for a long time, and thought: "It seems that the calculation of normal difficulty is not difficult for this group of magic students, and it is time to come up with some 'epic' problems." ”

"It's time to show your true strength!"

With a roll of his eyes, he took care of it

Wu Fan looked at the student with a smile and said slowly: "I have a total of three questions, as long as you can answer any of them, you will win." ”

"The first question, there is a man who bought a chicken for eight copper coins and sold it for nine copper coins, and then regretted it and bought it back for 10 copper coins, only to sell it for 11 copper coins, and asked him how much money he made in the end?"

"The second question, as we all know, chickens lay eggs, eggs give birth to chickens, so after all, did the world come first with chickens or eggs?"

"The third question, there are two bottles of wine, eight taels each, and a cup with a capacity of three taels, the cup is empty, there are three utensils in total, and there are four people who want to divide the wine equally, now how to use these three utensils to make these four people drink the wine they deserve?"