Xueba couples do not study

Chapter 18 Far away in the sky, close in sight.

After the two finished their meal, Lin Sheng cleaned up the tableware in the kitchen, and He Yang opened the homework sent to him by his biology teacher on his laptop in the living room, and started to do it.

After Lin Sheng was busy for a while, he came to the living room to lie down on the sofa and relax for a while.

He Yang looked down at the textbook in his hand, then looked up at the biology question on the computer screen, scratched his hair, but still couldn't find the answer to the question, so he whispered her name:
"Sheng, come here and see what you choose for this question?"

"Which way?" She heard his call, got up and sat beside him.

"This way." He stretched out his right index finger and pointed to the biology question on the computer screen.

Lin Sheng looked in the direction of his finger. The topic he pointed to was the last two questions of the last question:
A man whose parents have genotypes IAIA and IAi married a woman whose parents both had genotypes IBi and had four children.Please answer the following questions (answers can be expressed in fractions)
(1) What is the probability that all four children are type A?
(2) What is the probability that two of the four children are type A?
(3) What is the probability that the first and third children are type B, and the second and fourth children are type A?
(4) What is the probability that the first child is type A, the second child is type B, the third child is type AB, and the fourth child is type O?
Except for the last two questions, He Yang has already solved them all.

Lin Sheng took a rough look at his first two questions.

Well, correct.

So I began to review the last two questions again, and after calculating the results silently in my heart, I put the cursor on the answer and typed the answers to the two questions on the keyboard.

9/4096
While she was typing, He Yang was also watching. He was a little confused about the last two questions.

In science biology, genetics is one of his major weaknesses.Although it is weak, but the results are high.

After reading Lin Sheng's typed answer, he thought about why he got such a result in his mind.

After thinking for about 3 minutes, he chose to give up and wanted to call the person next to him.

But for some reason, she knew that he would ask her, and typed out the steps of the last two questions on the keyboard.

3.（1/8）·（3/8）=9/4096
4.（3/8）·（1/8）·（3/8）·（1/8）=9/4096
After reading the steps to solve the problem, He Yang felt that he could choose to give up on biology.

Why Sheng solved the problem so quickly, he didn't think about it for a long time, this is the gap.

He Yang couldn't help saying in his heart.

After He Yang solved the biology problem, he lent the computer to Lin Sheng who was bored to play.

"He Yang, what is in this folder of yours?" Lin Sheng accidentally double-clicked a folder on the desktop, but it showed that a password was required.After she saw this, she asked He Yang.

"Secret." He Yang only left her this sentence.

When she heard what He Yang said, she decided to spend an hour to unlock the encrypted folder.

Only 15 minutes later, she did not unlock it, and wrote countless possible passwords on the computer's notepad, but none of them were correct.

He Yang glanced at the numbers on the notepad that might be passwords, and just smiled without saying a word.

She certainly didn't know that the password was far away in the sky and close in front of her eyes.he thought.

As for whether Lin Sheng solved it in an hour, I don't know, but half an hour later, the two appeared next to the bus stop at the gate of the villa area.

Just half an hour ago, the two received calls one after another.

He Yang received a call from his father telling him to go back early, saying that his grandparents missed him very much, and asked him to go and accompany the old man first.

And Lin Sheng received a call from her cousin, saying that she and Lin Zhi are heading towards her house now, and they will go back together tomorrow.

So, they packed up and left the villa.

Before parting, Lin Sheng took out the residence card that mother He gave her, put it in front of He Yang, and said: "He Yang, this is the residence card that my aunt gave me, you..."

Before she finished speaking, He Yang interrupted:

"My mother gave it to you, so you can keep it." Actually, I hope you keep it too.

"Okay." She put the residence card back in her pocket, and the bus to Lin's house just pulled into the stop, so she said goodbye to him, "He Yang, see you tomorrow."

"Well, see you tomorrow."

　There is no small theater today.Well, I seem to be a little watery in this chapter.The biology questions in this article were found on the Internet, and the difficulty may be very simple for a true scholar (in reality), but please don’t leave a message saying: such a simple question Xueba He Yang can’t do it.In fact, I wanted to find a very difficult question here, but I couldn't find it, so I took this set of questions (T ^ T).So much for the topic.The next plot is the seven days of National Day, so stay tuned (〃'▽'〃)
　　
　
(End of this chapter)