A Logical Math Problem 10, a Logical Math Problem

There are only 3 types of situations: one true, two true, and three true.

Divide them into two groups and write down which is more important. Then each group of two scales (three times in total). If the heavy group is equal and the light group is equal, then both the light group are false.

If only the heavy group is not equal, then the weight in the heavy group is true, and the remaining three are false. If only the two light balls are not equal, then the light balls in the light group are false, and the remaining three are true.

Four numbered numbers, 1, 2, 3, 4

1, 2 weigh once.

1,3 weighed once.

1,4 weighed once.

If the weight is the same three times, it is No. 1.

If the first time is lighter than the others, it is the number 2.

If the second time is lighter than the others, it is the number 3.

If the third time is lighter than the others, it is the 4th.

It's easy.

Weigh the two together and note the weight.

Then weigh the remaining two together and note the weight as well. Compare that group is lighter, and the fake one is definitely in that group.

Then weigh the two of that group separately, that is, weigh them twice to compare the weight.

That's choosing a pearl.

Each of the remaining ones is weighed once for each one.

It is impossible to have four truths, nor can it be four false.

So just look at the weight.

Weigh 3 at will.

If one of them is weighed and is lighter than the other, it is false.

If not, then the one that doesn't weigh is fake.

2 - 2 pcs.

Take out a light pile.

Two times is also fine.

Summary. Xiao Ming gathered his friends early and organized a party on Sunday to celebrate his birthday . He ordered a big Hawaiian pizza from his favorite pizzeria. The diameter of the pizza should be 14cm.

Before the guests arrived, he measured the diameter of the pizza. However, the pizza is only 13 cm in diameter! Wei Oak asked

How many percent of the pizza is a percentage smaller than its estimated size? The answer here is7%

The answer is that using the packaging shown in the picture below, the company tried to get as many Rubik's cubes as possible into the boxes. The size of the Rubik's Cube is 3 centimeters * 3 cm * 3 cm . how many rubik's cubes can be placed in a box ?

Hui Ze. You can place a total of 4 of them.

The answer here is

The picture is 3*3*8, so you can put 4 of them.

In the question: 3*3*3 so you can put 12 of them.

Zhang Wei wanted to make Sushi for the school bazaar. He calculated that he would take 24 yuan to the fish market to buy fish to make sushi . At first he wanted to buy tuna , but he realised that if he He Qin bought salmon instead, he could buy an extra 180 grams of fish for the same amount of money .

Therefore, Dmitry decided to make salmon sushi. Q: If 100 grams of salmon is 3 yuan less than 100 grams of tuna, how many grams of salmon did Dmitry buy for 24 yuan of blue silver?

The answers are: 701 grams to 1000 grams, 101 grams to 300 grams, 401 grams to 600 grams, 1501 grams to 2000 grams.

401 grams to 600 grams.

Summary. Hello dear, I'm glad to answer for you for your inquiry Xiao Ming spent 30 yuan.

One day, Xiao Ming and Xiao Wang took some money together and went to the store. The ratio of Xiao Ming to Xiao Wang Qian is 3:5.

Xiao Ming bought a toy car, which was twice as expensive as Xiao Wang's foreign cherry doll. Xiao Wang's money is 40 yuan more than Xiao Ming's. Q:

If Xiao Ming's money is 11 yuan, how much did he spend on hunger?

Hello dear, I'm glad to answer for you for your inquiry Xiao Ming spent 30 yuan.

There is no such answer here.

Is this a textbook question? Kiss.

Yes, there are those answers here.

Dear, is there a ** for this question? Send me a ** I'll do the math.

No, only questions.

Ok, pro choose the option of 29 yuan.

Solve this way. Okay, I'll take a look.

Dear, the area of this question is 628 choose b

Summary. Students, you can take a picture of your topic and show it to me

Logical math problems.

Students, you can take a picture of your topic and show it to me

Euro 2020 is the 16th edition of the European Football Championships, a quadrennial international men's European Championship . The quarterfinals between the Czech Republic and Denmark were held at the Baku Olympic Stadium in Baku, the capital of Azerbaijan. The local time of some countries is given

Brazil , Brazil : GMT - 3 ; Baku, Azerbaijan : GMT + 4 ; Singapore :

Greenwich Mean Time + 8 . Regardless of venue, the match must start on 3 July 2021 at 21:30 local time.

If the match is played in Brazil and not Baku, the capital of Azerbaijan, how many hours in the morning and in what time will the match be played in Singapore?

The answers are:17 hours p.m., Fourth of July 8:3027 hours p.m., July 3, 22:3037 hours early, July 4 at 8:304Seven hours in the morning, July 3 at 22:30

Pick the third one. In Roald Dahl's Matilda, there is a boy named Bruce Borgetrot who is caught stealing cake from the teacher's room. It was the director who ate an 18-inch cake in front of the whole school .

A top-down view of the cake is shown below: The cake is 18 inches in diameter. Bruce starts with the ABC part of the cake.

OC is 7 inches and perpendicular to AB. What percentage of this portion is in the original cake ?

When the idea for the Eiffel Tower was first proposed, Parisians complained that it was too tall and ugly compared to a historical monument like Notre-Dame Cathedral . The height of the Eiffel Tower is 324 meters. The height of Notre-Dame Cathedral (before the fire) is 69 meters.

Notre-Dame Cathedral is located 4 km from the Eiffel Tower. Assuming there are no other buildings on the road, how far do visitors have to be from Notre-Dame de Paris to make anyone think they are as tall as the Eiffel Tower? Pick B

Set up beef cattle x heads, dairy cows y heads.

x-45):y=2:3

x-45)=40%*(y-20)

It is sufficient to combine the above two equations to solve the equations.

It's impossible! Only the No. 1 button and the No. 3 button, the minimum number of people who press at the same time is 86 + 92-114 = 64 people, in other words, at least 2 buttons will not be less than 64 people, how can it be 3?

Please confirm your title!

By the way, there are 77 people who have pressed at least 2 buttons.

On the other hand, I think about how to distribute these times to as few people as possible, and then distribute the number of people who have been allocated less times to people who have not pressed 1 time, and try to minimize the number of people who have 2 times, so.

First allocation: 26 people according to 5, 31 people according to 4, 20 people according to 3, 9 people according to 2, 6 people according to 1.

Re-uniformity: At this time, there are 114-92 = 22 people who have not pressed once, 9 people who share 2 times, 13 people left, and then 6 people who have 3 times each have come out 2 times, and the remaining 1 person has not been pressed, but this 1 person has not been able to even out 1 person 3 times.

The end result is:

Or 26*5+31*4+13*3+2*1+43*1 At this time, a total of 26+31+14 = 71 people pressed 2 times.