Zhou Yan frowned.

In this question, the answer is 1x7=7, which is theoretically correct.

But it seems to be a bit flawed.

Because the 1x1 matchsticks drawn on the title are very close to each other, if you just fill a match on top of 1 and become a 7, then the match will be on top of x.

Spatially, this is not tenable.

emmm...... It shouldn't be that simple.

Zhou Yan flipped out the book.

[Zhou Yan's father: change four to 1/1]

Zhou Yan shook his head: No, the ratio between the numbers is not right and imperfect.

[Mr. Qin is dreaming: an inequality 1+1≠7 can be established]

"That's not right, people say it's an equation in the title, and they have to make it an inequality, isn't this just a change of title."

[Black cat in the hallway: 1×7=7? 】

This answer is the same as what Zhou Yan thought at the beginning, but in terms of space, it is unreasonable. It's better to write it as 7x1.

However, the huge multiplication sign between the numbers always made Zhou Yan feel a little tired.

may be because the text in the book is delayed, so there are not many people who leave messages, and in these small number of messages, Zhou Yan did not see an answer that could affirm himself.

So he closed the book.

When it comes to exams, plagiarism is naturally very easy.

But plagiarism doesn't mean it won't, it's just a lazy thought.

Zhou Yan picked up the test paper and stared at the matchsticks without blinking.

Ten seconds later—

Well, thought of it.

He picked up the pen and wrote it underneath

Ⅸ=9

This time, whether it is space or location, it seems to be very suitable.

Of course, for the sake of insurance, the answer of 7x1=7 was also written on it.

The first time he helped the boss to do something, he had to behave steadily.

Zhou Yan was very satisfied with his answer.

Then move on to the next question.

......

There is finally a little more text in this question.

——————————————

One night, a programmer was killed in front of a computer.

The cause of death was a knife that pierced the liver and died of excessive blood loss.

Before he died, the programmer's fingers seemed to be able to touch the [1] and [0] buttons on the numeric keypad, so he knocked down the following string of numbers on the screen.

1111011

1110111

1000001

1011101

1000001

1011101

1000001

1111111

After a police investigation, four suspects were identified.

Little red, little orchid, little white, little green.

Who is the murderer?

——————————————

"Huh." Zhou Yan not only smiled, although these questions are simple, they are really interesting.

He flipped through the book and found that the person in the book had not yet given the answer to this question, probably because of the signal delay.

"Or ...... Take a test of the people in the book? He thought with a lot of mistaste.

The name of the book in my hand is "Famous Detective Cultivation Manual", and now I seem to have finally embarked on the path of detectives, but I don't know how far these people in the book have cultivated their detective path.

Could it be that you can't even do such a simple question?

"Hey, hey~" Zhou Yan smiled maliciously, and then put the question aside, not even writing the answer.

He was going to wait a while and see what the people in the book could do.

So, next question.

——————————————

The billionaire took a private helicopter to the villa for a vacation, but an hour later, the helicopter turned back to the airport.

The pilot reported to the police that the rich man suddenly opened the door of the plane during the flight, jumped out of the plane and committed suicide, and left a suicide note on the chair.

The police immediately contacted the detectives and went to the helicopter to investigate.

Sure enough, I found that everything was just as the driver said, and there was indeed a suicide note on the chair where the rich man was sitting, which said that he was tired of life, so he committed suicide and had nothing to do with others.

But the detective immediately asked the police to arrest the driver, who he believed was highly murderous.

Why did the detective come to such a conclusion?

——————————————

This question is also very simple.

The purpose should be to test the detective's mastery of the testimony.

A qualified detective must be completely attentive when listening to the testimony of a suspect. The loophole in a testimony is likely to be fleeting, and the detective must keenly catch it the moment the loophole appears, otherwise, it will leave a chance for the murderer.

And Zhou Yan naturally didn't write the answer to this question, after all, he wanted to embarrass the famous detectives in the book.

So his gaze fell directly to the next question.

The topic is......

——————————————

Luxury passenger liners sail the seas.

One morning, a female corpse was found on the deck.

The deceased was a wealthy man who was stabbed to death with a dagger.

Because the crime took place on the vast sea, the murderer must still be on board.

There were two people on board who had a motive to kill.

Suspect A, the victim's nephew and heir to his property, is in debt due to gambling and is struggling to repay.

Suspect B, the victim's secretary, was fired during a voyage due to corruption revelations.

Suspect C, the victim's wife, holds a grudge against the suspect because she is about to get divorced.

Based on the above, from the perspective of the motive for the killing, please determine who the murderer is more likely?

——————————————

The purpose of this question is even clearer, that is, to examine the detective's ability to dig into the motives of the case.

A qualified detective naturally can't run around like a headless fly in the case, and the motive is to guide the detective in a direction.

It can be said that the motive of the investigation is the most important and the first thing to be done in most cases.

Zhou Yan stretched his waist, and then picked up the detective's notes on the side.

This is just the beginning, and I can't sit still......

The detective's cultivation path has a long way to go.