Those who love shuxue puzzles, please come in

1. Cut a 2-meter-long iron wire into 7 sections on average, each section is (2 7) meters long, and each section accounts for the full length (1 7).

2. The number A is 1 and 2 3 times the number B, the ratio of the number A to the number B is (5:3), and the number B is (60%) of the number of A.

3. The prime factors of A and B are decomposed respectively: A = 3 5 7, B = 5 7 11, and the greatest common divisor of A and B is (35).

4. 500 grams of salt water containing 2% salt, and evaporate (200) grams of it to obtain salty salt water.

5. From 9 a.m. to 9:30 a.m., the minute hand rotated (180) degrees and the hour hand rotated (15) degrees.

6. Use 4cm long, 2cm wide, and 1cm high cuboid blocks to form a cube, at least (8) such cuboids, and the surface area of the cube is (96 square centimeters).

7. The radius of the bottom surface of a cone is 3 4 of the radius of the bottom surface of the cylinder, the volume of this cylinder is 8 9 of the volume of the cone, and the ratio of the height of the cone to the height of the cylinder is (6:1).

1.Right. 2.(5:3), the second parenthesis pair. 3.Right.

5.The first parenthesis pair, the second is (

6.The first bracket pair, the second is (96 square centimeters).

Put 20 grams of sugar in 100 grams of water. After three days, only 100 grams of evaporated sugar water is left, and the concentration of sugar water is increased by a few percent compared to the original?

The original concentration is 20 120 = 1 6

Later the concentration was 20 100 1 5

A wire, the first cut off half and 1 cm, the second cut off the remaining half and 1 cm, the third cut off the rest of the half and 1 cm, there are 7 cm left, how many centimeters is the original wire?

(1) The initial concentration is 20 120 = 1 6

After evaporation, the concentration is 20 100 = 1 5

Improve about (2) ((7 + 1) * 2 + 1) * 2 + 1) * 2 = 70 (cm).

I feel like she's got a crush on you, and it's a good feeling.

But there is a colleague who is her boyfriend, so I don't dare to face you, if I have her like this, then I must think this way, I feel like I told you, but this relationship needs to be handled by you

Could this be the legendary ambiguity?

The happiest laugh is - a hearty laugh.

The most boring laugh is - not to laugh and pretend to laugh.

The happiest smile is - the eyebrows are open-eyed.

The cruelest laugh is - there is a knife in the smile.

The worst laugh is - wild laughter.

The most embarrassing laugh is - a stiff laugh.

The most ridiculous laugh is - a giggle.

The most terrible laugh is - a sneer.

The ugliest laugh is - the skin laughs and the flesh does not smile.

I don't want to hit you, but I don't feel like she cares about you as much as you say she does, and if I like a guy, I'll do the exact opposite of her, maybe she's just avoiding you!

It's not okay to like it, because she already has a boyfriend, and she avoids you, which means that she wants to be faithful to her current boyfriend, so you better not salvage her.

I don't think you're overdoing it. Since both parties have agreed to meet on a blind date, there should be preparations for a quick solution. It is rare to meet to determine whether there is a need to know more about it.

However, it is also possible that you do not behave well and are not enthusiastic enough when you meet. Girls will feel that they are not valued by you and have no good feelings for you. Be sure to pay attention next time.

You're not doing very well, you should continue to get along with her first, get to know each other slowly, and after a long time, if she really doesn't feel good about you, she will say.

Well, girls don't like it. With my personal character, if I heard this kind of thing, I would like to reply to you like this.

That is, she doesn't have any feelings for you, it may be that she doesn't like you, but she feels that it's good to be friends with you, so she doesn't refuse you, you speak well, and normal people will say that. In fact, if you like it, you will come and go, but I personally feel that she will want to be ordinary friends with you.

The first time we met, you were a boy and didn't speak, do you know that blow to a girl, and then the next day you said it like this, which made people feel very uncomfortable and felt that you were very proud. Even if she has feelings for you, he won't agree.

I think love is one of the most needed. The most popular thing is that you need to be accompanied by someone, mentally, physically, and psychologically!!

Depending on what situation you are in at the moment, different times and different situations have different needs for love. However, I don't think there is such a thing as love in the world, just an illusory illusion.

If you want to be loved by others, you have to give true love.

- -If you like it, do it according to your heart, sometimes he clings to you and sometimes ignores you, it's all to get your attention! He should like you!

You're 13 years old. Fundamentally the understanding of love is still very superficial, love someone to be happy, but also let others agree with your happiness, especially your relatives, they are eager to see you happy. But now your so-called love is somewhat acceptable to ordinary people, especially your parents and relatives who love you more.

They love you more than you do. Love is not something that is immutable. The shelf life of love is very short, and people cannot live in love forever.

So you still think carefully about your life. Don't choose a colorless life because of fun and curiosity.

Friend, there is a kind of love called letting go.

Love is in your own hands, and it is your own right to fight for it or not.

You need the love of Professor Sheep.

Show your sincerity, confess to him, or he will leave when the time comes, you will lose this opportunity, even if he refuses to accept you, you can be good friends with him! If it's late, there's no hurry.

Don't be young, don't go and do that. Otherwise, you will only be discriminated against by society and your classmates. Maybe you're young, maybe you don't understand yet, maybe you're older. I am reminiscing about the present. You will feel like you have made the right choice.

Some things are better hidden in your heart, and if you destroy your current relationship, maybe you won't even have a chance to talk in the future. Everybody's going to point fingers at you, too. Think about making the right choice.

I don't mean anything else.

I'm a woman. It's about the same age as you.

I think a boy is only 13 years old.

Why?

You still have a lot of great plans ahead of you, don't you?

I've done many, many stupid things before.

Looking back now, I feel stupid.

You now. What should be done is:

Think about it, it's right or wrong.

Hope you get the answers you want.