Baili Hongzhe rubbed his eyebrows inexplicably: "What do these numbers represent?" ”

She twitched the corners of her mouth, her expression slightly stiff: "Second brother, haven't you studied mathematics?" ”

"Mathematics? What is it? The young man raised his eyebrows, and the corners of his eyes and eyebrows seemed to have four big words obviously: I don't know!

Huh, sure enough, ancient mathematics only had very little research in arithmetic and algebra, but it didn't go much deeper, they didn't know what mathematics was, and in ancient times they should call mathematics arithmetic.

Yun Qiange coughed awkwardly, and asked in a different way: "Cough, I mean arithmetic, haven't you learned arithmetic?" ”

Speaking of arithmetic, Baili Hongzhe seemed to understand something, and suddenly realized: "Is arithmetic the meaning of calculation?" Except for businessmen who can learn, not many people will go out of their way to learn it, after all, calculation is not advocated in our country, if you want to talk about calculation, the people of Qi country attach great importance to it. ”

That means that the person who designed this lock is likely to be from the Qi Kingdom? Shangguan Ning is really smart, this question is considered to be a graduate student in modern times, and this lock is placed in the Tianyuan Dynasty When you meet these people who don't know how to count, you may really not want to go out, but who let her receive higher education in the motherland since she was a child, this is a mathematical reasoning problem at a closer look, huh......

8，17，20，15，（）

Yun Qiange looked at the numbers on the lock, there seemed to be countless numbers spinning rapidly in his mind, and everything around him seemed to be quiet.

The algorithm for converting 8 to 17 is 8x2+1=17,

Yun Qiange nodded, thinking about it while calculating in his mouth: So how to calculate 17 to 20, use 17x1+1=20, yes, that's it!

Her serious appearance has an indescribable charm, he feels that the third sister's wise eyes are like a dark night sky, and every number in the lock seems to be printed in the eyes, like bright stars gradually dissolving into the inky black night sky.

She seemed to have forgotten everything around her, and was so engrossed in calculating, her face was obviously so ugly and terrifying, but he knew that she was the most beautiful and intelligent woman in the world.

Yun Qiange's hand holding the lock tightened, as if he had suddenly figured out something, and the dark night sky in his eyes shone like a meteor, if 20 is less than 15 and 5, then use 20x0. 5+5=15

Pick 0. Multiples of 5, 15x0. 25+7=10。 75

The answer is 10. 75！ The answer is 10. 75！

Yun Qiange slid the gear on the lock and turned the number to 10. 75, just listen to the sound of "card rubbing", the lock is opened!

"Second brother! I'm unraveled! We can finally get out! Yun Qiange was so happy that she barely jumped up, she opened her mouth and smiled excitedly, and a little tiger tooth was exposed, very cute, her eyes were as happy as stars, dazzling as black gems.

"Yes, yes, the third sister is the smartest." Baili Hongzhe was also infected by the woman's happiness, as if forgetting all the pain on his body, he bent down and stood up, stretched out his palm and said, "Let's go, it's time for us to go out." ”

"Hmm." Her hand covered the second brother's hand, and she breathed a sigh of relief in her heart, Nima is so scary to do a question, if she fails, what if she even affects the second brother, she has never been so nervous when she received the task of assassinating a government official for the first time.

He took her hand out of the iron cage, looked back at the ugly and cautious face of the third sister, Baili Hongzhe held Yun Qiange's palm tightly, and his dark eyes glowed with imperceptible soft light in the light, in fact, the ugliness of the third sister is not a bad thing, at least no one will come to share everything about her with him.

The intelligence of the third sister, the disguise of the third sister, and the beauty of the third sister are all known to him, which is also the thing he is most fortunate about.