You see, hundreds of chickens, cocks, hens, big chickens and chicks are all at different prices and in different quantities, but little jank can get a good grade by rolling his eyes. Neighbors call little Janke a "prodigy" and they often ask him to help solve problems.
Jank Jr.' s reputation as a "prodigy" spread to nearby villages and also to the ears of county officials. The county magistrate doesn't believe it and wants to try it himself.
On this day, the county magistrate sent someone to invite jank's father and gave him one hundred pence to send one hundred chickens. At that time, the price of chickens was five pence per rooster, three pence per hen and three pence per chicken.
Along the way, little jank's father racked his brains and didn't work out the bill. I didn't expect to go home and tell Xiao Qiu Jianyi. jank turned to his father and said, "Tomorrow I will send four cocks, eighteen hens and seventy-eight chickens to the county magistrate."
The next day, Jack's father gave all the chickens to the county magistrate. As soon as the county magistrate checked, the variety and quantity of chickens coincided with the amount of money, and he could not help secretly exclaiming. He wanted to test the prodigy again, so he gave jank's father a hundred pence to buy a hundred chickens, but these three kinds of chickens could not be the same as this one.
The father was very worried and thought: Can the son still calculate the new number of chickens? Unexpectedly, when he got home, little jank recovered quickly: eight cocks, eleven hens and eighty-one chickens. His father's calculations add up to exactly 100 chickens and 100 pence.
This time, my father simply took little jank with him to deliver the chicken. The county magistrate counted the chickens, praised them again and again, and took out a hundred pence, still asking Yankee's father to send another 100 chickens of different varieties.
How should I count the chickens this time?
[Answer: Little Jenk standing by blurted out, "Dad, next time we will send twelve cocks, four hens and eighty-four chickens."
Hearing this, the county magistrate asked jank's father, "Is this your son?"
His father replied, "It's the child Zhang Qiujian. The last two chickens were counted by children. "
"Being called your prodigy really deserves its reputation." The county magistrate was completely persuaded this time and gave Zhang Qiujian 300 pence, and all the 300 chickens he bought were given to his family. The county magistrate also left Xiao in the government to create conditions for his further study. In the future, Zhang Qiujian really became a famous mathematician. ]