Simim Island.

On the shoulder of the island, under the towering stone walls, the Discovery was swaying gently as the deep sea undulating.

Sifa leaned on the side of the boat, enjoying the sea breeze.

It's already March, and for the past week, Sifa has stayed in Bayam City, secretly inquiring about the 'Dark Emperor' through various channels, but unfortunately nothing came of it.

However, after collecting all over the place, I gathered the potion materials for 'Machine'. Gregor was promoted to 'Machine' yesterday.

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that is...

"Quack, quiz! Give me a quiz! Give me a quiz, my soul of calculation is burning."

On his shoulders, Gregor was caught in an unusual excitement. He didn't know if it was because of the potion, or because of his parrot's character. After the promotion anyway, it became very noisy.

"I know, I know."

Sifa sighed, covered her ears, tried her best to recall the math problems she had learned and read in her previous life, and then said casually: "Put a rooster and a rabbit in a cage, from the top, there are 35 heads, from the bottom. , with 94 feet."

"Tell me, how many roosters and rabbits are there?"

"Quack, it's too simple."

Gregor fluttered his wings and flew to a small blackboard prepared for him by Sifah. The parrot picked up a piece of chalk in his beak and said while making gestures on the blackboard: "Assuming that all the cages are roosters, then There are 35 in total, and each chicken has 2 feet, so there should be 70."

"This is 24 fewer feet than the known total number of feet, and the reason for the reduction is that each rabbit has 2 feet less."

"So, look at how many 2 feet are missing in the 24 feet, and then you can find the number of free chickens, and then find the number of chickens."

"Therefore, the formula should be like this!"

Brush brush.

I saw Gregor quickly write a series of formulas on the blackboard.

/

=/2

=24/2

=12

"If there are 12 rabbits, the number of chickens is... 23!"

Gregor put down the chalk and flapped his wings: "Is that all there is to it? Can you only come up with such a simple problem in your mind? Are your brains eaten by living corpses?"

The muscles on Sifa's face twitched slightly, and there was an urge to strangle Gregor to death.

"I'll give you one."

Adjutant O'Neal was eager to try: "This is a difficult problem that my teacher gave us when I was in college, and it took us a long time to figure it out."

Gregor immediately exclaimed excitedly, "Quick, quick, what is the problem, I want to calculate it!"

After wiping the blackboard, O'Neill drew a nine-square grid on it, and then said: "You need to fill in the nine blanks with the nine natural numbers from 1 to 9, let the three numbers on the horizontal, vertical and diagonal lines, add It all equals 15."

Xifa rubbed her face, as if she was in a math class in a previous life.

Gregor was quiet for a while, then flew to the blackboard and began to speak again: "1 plus 9 equals 10, 2 plus 8 equals 10, 3 plus 7 equals 10, 4 plus 6 equals 10. ...that way, as long as the sum of each logarithm adds 5, it equals 15, so the center box should be filled with 5!"

O'Neal suddenly opened his mouth slightly, obviously not expecting Gregor to grasp the key to this question so quickly.

"Next, the four groups of numbers just mentioned should be filled in the horizontal, vertical and diagonal positions respectively, and the four corners should be filled in first. If two pairs of odd numbers are filled in correctly, then the odd number can only be obtained because of the sum of the three odd numbers. , the grids on the four sides can no longer be filled with odd numbers, so this method will not work..."

Gregor kept screaming and screaming: "If the four corners are filled with a pair of even numbers and a pair of odd numbers, well, it won't work."

"In this way, it is obvious that two pairs of even numbers must be filled in the four corners. After the numbers on the diagonal are filled in, it is easy to fill in odd numbers in the rest of the squares, so... The answer should be That's it!"

492

357

816

........

"too easy!"

"too easy!"

"Are you all curly-haired baboons? No one will give me a harder problem!"

Gregor flapped his wings and shouted loudly, his aura was comparable to that of a high-sequence powerhouse.

Cepha looked around, trying to find a stick to stun the noisy parrot. Suddenly, Gregor stopped, and then it flapped its wings and flew into the captain's room.

"I'm sleepy, I'm going to sleep, don't wake me up until you think of more interesting topics."

After the parrot flew into the captain's room, Xifa's inspiration suddenly touched, and he subconsciously turned his head to the other side of the sea.

On the undulating deep blue water, beneath the white clouds floating leisurely, a blazing white fire suddenly appeared.

The firelight grew rapidly, from far to near, flying at high speed.

Xifa soon saw that it was not some kind of firelight, but a huge flame spear!

He immediately subconsciously clenched the 'incomplete spear of natural disaster', and on the Discovery, the crew immediately entered a state of war. But the flame spear came too fast, and before they were ready, the flame spear had already landed on the front of the deck.

However, the spear didn't seem to be malicious, so it didn't set anything on fire, and it didn't pierce through the wood.

He is tall and thin, wears glasses, has dark hair, a high nose and blue eyes, and a well-tailored beard. UU Reading www.uukanshu.com

Wearing a red double-breasted long coat, with a badge on the chest, it is the pattern of a blood-stained crown and a cross.

The other party pressed the red top hat on his head, smiled, and said to Cifer, "Good morning, Captain Rayleigh."

Sifa made a gesture to let the crew on board temporarily disarm, and responded with a smile: "Good morning, Your Excellency Dean."

This is Dean Wengris, a 'Iron Knight' from the Jagged Cross, the last time I met near Sonja Island!

After a long absence, he finally reappeared.

Sifa invited him into the captain's room, and asked him to bring black tea, and then said, "Your Excellency Dean seems to be in a good mood. It seems that I will hear good news."

"It's really good news."

He took off his hat, stood by the window, looked at the demigod on the deck outside and smiled: "We have determined that Mr. Reilly is a person worthy of investment, and we are willing to provide you with potions in a cooperative way."

"If I guessed correctly, you should already be Sequence 5, the 'Reaper'."

"Otherwise, it is impossible for you to repel Admiral Hell and capture the pirates on the 'Deep Sea'."

Xifa was not at all surprised by the speculation of a demigod, he admitted generously: "Yes, I'm already a 'reaper'."

"Then, what you are looking for is the potion of Sequence 4."

Dean Wenglis turned around and said lightly, "I think you should understand that demigod potions are not so easy to get. I hope you are mentally prepared."

PS: Thanks to Tyrant 29, Wu Hongqi, Shu Keyuan, Xuan Yi and other classmates for their reward and support~