Ask the prawns to do some favors and find some humorous puzzles!

A classic interview question from Microsoft.

Jiang Guangyu. Why are manhole covers round on the main road? "This is a classic interview question from Microsoft.

The variety of test takers:

What shape the manhole cover is depends entirely on the shape of the wellhead it wants to cover. If the wellhead is round, the manhole cover must also be round. ”

The circle is the simplest beauty, and it has a good ornamentality, so people design the manhole cover as round. ”

The force of the circle is uniform, and it can best withstand pressure from different directions, so it is not easy to be damaged. ”

What is the easiest to carry? Apparently round. Since it is round and can be rolled, it is conducive to the handling of workers. ”

The round one is the only manhole cover that can change the angle arbitrarily without falling. For example, if it is a square or rectangular manhole cover, the length of its diagonal is greater than the length of the side, it is easy to fall. ”

The round one is easy to install, you don't need to consider the direction, you can put it however you want. ”

The round one is easy to maintain, because the sewer entrance and exit should be left enough for one person to pass through, and the cross-section of a person climbing down or climbing up the ladder is basically round, so the sewer entrance and exit and manhole cover are designed to be round. ”

The question of whether a manhole cover is round dates back to France in the 13th century. When the French built Paris, they used round discus as manhole covers for sewers. Later, the Roman Empire used French sewer technology to build the city of Rome, and then major cities around the world adopted Roman sewer technology, and as a result, round manhole covers seemed to become the norm.

In fact, there is no standard answer to this question in the interview, as long as it is reasonable, of course, the more comprehensive and profound the better.

Microsoft uses this classic interview question to test the candidate's way of thinking and ability to analyze and interpret the problem, especially the candidate's ability to think creatively.

So why is this seemingly extremely ordinary interview question called a classic interview question?

Because it better embodies one of Microsoft's key innovation ideas or mottos: "Innovation is not about getting things done, it's about inspiring." ”

What words are there besides the big one?

Let's not talk about the answer, hehe.

Give you a barometer and ask you how tall this building is.

Answer: Give it to the janitor and let him tell you. Test your flexibility.

Upstairs"billion"It doesn't count.

Use the words "I, love, Cecilia Cheung, Nicholas Tse" to make a sentence, and the answer is "Nicholas Tse loves Cecilia Cheung" You will definitely ask me "I"? I just want to say what's the matter with you?

(Unit efficiency problem) the first: 34000 + 2 = 34002 yuan 34002 yuan 10 million times = that is to say, every 10,000 times spent yuan.

The second: the same way 7800+ yuan 120 10,000 times That is to say, the second mold costs about 120 yuan per 10,000 times.

To sum up: the first mold will be much more cost-effective.

The question is equal to 31 12

Column square year field Cheng 1y (triangle called wide shape with y instead of can not be entered) 2 = 1a + 3 2 = 2y3 = 2a + 5 6, and Que Liang to find a = 2 3, bring in 3y4