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sson 1. Lan in the apartment number? Lan house is in an 8 storey house, each floor has 8 apartments. One day, the class asked Lan: What is your house in the apartment? Ask me some questions, I will answer all your questions, but just say yes or no. Through these questions you try to figure out how many in the apartment Huy said: I will ask, are you in the apartment number 1, number 2, ..., No. 63. So with most 63 questions you will know which apartment you. You say, I only need 14 questions, 7 s...
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sson 1. Lan in the apartment number? Lan house is in an 8 storey house, each floor has 8 apartments. One day, the class asked Lan: "What is your house in the apartment?" "Ask me some questions, I will answer all your questions, but just say" yes "or" no. "Through these questions you try to figure out how many in the apartment" Huy said: "I will ask, are you in the apartment number 1, number 2, ..., No. 63. So with most 63 questions you will know which apartment you. You say, "I only need 14 questions, 7 sentences enough to know what floor you are on and 7 you can know exactly what you are in the apartment." Dear children, I have to ask several times to know. How are you Lan in the apartment?
Lesson 2. Game together across the bridge. Four people need to cross a bridge. Because of the weak demand, each time we go not more than two people, and because it is dark, we have to take the light. Four people walk differently, crossing the bridge with corresponding time of 10 minutes, 5 minutes, 2 minutes and 1 minute. Since there is only one lamp, each passage must be carried back to the next person. When two people go together, cross the bridge with a slower time. The following example is a way to go: - 10 minutes to go with people 5 minutes to bridge, 10 minutes to take. - 5 minutes to take the lamp back, take 5 minutes. - 5 minutes to go with people 2 minutes through the bridge, It takes 5 minutes. - 2 minutes to take the lamp back, take 2 minutes. - 2 minutes with people 1 minute over the bridge, take 2 minutes. Total time is 10 + 5 + 5 + 2 + 2 = 24 minutes. Let's try to get away with a little less time as possible, and if less than 19 minutes is great
Lesson 3. Cashmere. Mallard buys 27 apples that are identical in size and volume. However, the salesman said that of the apples on the right is a slightly lighter weight. You use a table scales on both sides to find the apple that light. The minimum number of weighs required. Let's help you find that little apple. If they find that fruit after less than 5 weightings, then it is good.
Mother makes tasty toast in a small pan. After toasting one slide of a slice, she turns it over. Each side takes 30 seconds. The pan can only hold two slices. how can she toast both sides of three slices in 3/2 instead of 2 minutes ?
Mother makes tasty toast in a small pan. After toasting one slide of a slice, she turns it over. Each side takes 30 seconds. The pan can only hold two slices. how can she toast both sides of three slices in 3/2 instead of 2 minutes ?
Please awser it detail ( Xin vui lòng trình bày chi tiết )
A is playing the game. He flips the coin, and if it lands on heads, he gets 1 point. If it lands on tails, he gets 2 points. A does this thing many times. THE GOAL IS TO GET 14012010 POINTS. Note that the coin can land on side, but it HAPPENS ONCE 6000 FLIPS. But A can let the coin LANDS ON SIDE ONES EVERY 2010 FLIPS. If this happens, he will get 5 points.What is the maximum number of flips that A need to achieve the goal? ( About 3/4 of the time the coin lands on tails. )BONUS:IF A TAKES 10 SEC...
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A is playing the game. He flips the coin, and if it lands on heads, he gets 1 point. If it lands on tails, he gets 2 points. A does this thing many times. THE GOAL IS TO GET 14012010 POINTS. Note that the coin can land on side, but it HAPPENS ONCE 6000 FLIPS. But A can let the coin LANDS ON SIDE ONES EVERY 2010 FLIPS. If this happens, he will get 5 points.What is the maximum number of flips that A need to achieve the goal? ( About 3/4 of the time the coin lands on tails. )
BONUS:IF A TAKES 10 SECONDS FOR A FLIP, HOW MUCH TIME HE NEED TO ACHIEVE HIS GOAL?
1My class of 32 students are going to a Fun Fair for children and need to buy entrance tickets for each student. The price of an entrance ticket is 5,000 dong. The good news is that when we buy 5 tickets, the Fun Fair gives us 1 extra ticket for free. How much does my class have to pay to buy enough tickets for the whole class?2Minh’s family needs to tile the floor of a rectangular room, 5 m in length and 3.8 m in width, with square tiles. The length of the side of each tile is 0.5 m. Each of th...
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1>My class of 32 students are going to a Fun Fair for children and need to buy entrance tickets for each student. The price of an entrance ticket is 5,000 dong. The good news is that when we buy 5 tickets, the Fun Fair gives us 1 extra ticket for free. How much does my class have to pay to buy enough tickets for the whole class?
2>Minh’s family needs to tile the floor of a rectangular room, 5 m in length and 3.8 m in width, with square tiles. The length of the side of each tile is 0.5 m. Each of the tiles close to the wall, if not a whole one, is cut from a whole tile. The total number of tiles needed to tile the room is ?
3>A student cycles from home to school in a distance of 1,200 m with speed of 2.5 m/s. There are 4 crossroads on the way; the time to stop for red lights at each crossroad is 30 s the longest. The longest time it takes the student to reach school is?
both A and B province 105 km apart. motnguoi at 8 hours 15 minutes cycling from A to B at the same time a car from B to A. the two met at 9 hours 30 minutes
Asian. the velocity of each car knows the speed of each car knows the speed of the automobile velocity 5x bicycle
b. A confluence how many kilometers?
Question 1: What is 1/6 of 744? Answer: 124Question 2: Express seventy thousand, four hundred and nine in numerals. Answer: 70409 Question 3: Study the pattern. 88:811 880:8110 8800:8 ? The missing number is 1100Question 4: Subtract 346 from 752. Answer: 406Question 5: The ratio of boys to girls at a school is 5:4. If there are 255 boys at the school then how many students are there at the school? Answer: 459 students.Question 6: The product of 2 different natural numbers is 9. Their sum...
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Question 1: What is 1/6 of 744? Answer: 124
Question 2: Express seventy thousand, four hundred and nine in numerals. Answer: 70409
Question 3: Study the pattern. 88:8=11 880:8=110 8800:8= ? The missing number is 1100
Question 4: Subtract 346 from 752. Answer: 406
Question 5: The ratio of boys to girls at a school is 5:4. If there are 255 boys at the school then how many students are there at the school? Answer: 459 students.
Question 6: The product of 2 different natural numbers is 9. Their sum is 10
Question 7: Jack, Mary and Jacob buy ice creams. Jack buys twice as many as Mary. Jacob buys three times as many as Jack. If Jacob buys 12 ice creams then Mary buys 2 ice creams.
Question 8: My giant flower doubles its size every day. On Friday, it is 5 ( hay 10 gì đó ) times as big as its was on the preceding Sunday.
Question 9: If we write all of the whole numbers from 10 through 99 and cross out any number in which the first or second digit is divisible by 2 (for example, 41 is crossed out as 4 is divisible by 2 and 36 is crossed out as 6 is divisible by 2), how many numbers are crossed out? Answer: 65 numbers.
Question 10: It takes Bella three hours to clean a house. It takes Anna two hours to clean the house. How long would it take for them to clean it together? Answer: 72 minutes.
1 tháng 4 2015 lúc 13:28
Hung 2km from the house. Hung school at 16 hours 30 minutes and walk home with a velocity of 2.5 km / hour, and then announced Hung motorcyclists from 37,5km velocity / time to pick Hung. Meet Hung Q. What time?
Question 1:Subtract 346 from 752.Answer: Question 2:Study the pattern.88:811 880:8110 8800:8 ? The missing number is Question 3:Divide 2016×2016 by 2016. The quotient is Question 4:What is of 744?Answer: Question 5:Jack, Mary and Jacob buy ice creams. Jack buys twice as many as Mary. Jacob buys three times as many as Jack. If Jacob buys 12 ice creams then Mary buys ice creams. Question 6:100 hundreds + 1000 tens onesQuestion 7:My giant flower doubles its size every day. On Friday, it is ti...
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Question 1:
Subtract 346 from 752.
Answer:
Question 2:
Study the pattern.
88:8=11
880:8=110
8800:8= ?
The missing number is
Question 3:
Divide 2016×2016 by 2016. The quotient is
Question 4:
What is of 744?
Answer:
Question 5:
Jack, Mary and Jacob buy ice creams. Jack buys twice as many as Mary. Jacob buys three times as many as Jack. If Jacob buys 12 ice creams then Mary buys ice creams.
Question 6:
100 hundreds + 1000 tens = ones
Question 7:
My giant flower doubles its size every day. On Friday, it is times as big as its was on the preceding Sunday.
Question 8:
The product of 2 different natural numbers is 9. Their sum is
Question 9:
If we write all of the whole numbers from 10 through 99 and cross out any number in which the first or second digit is divisible by 2 (for example, 41 is crossed out as 4 is divisible by 2 and 36 is crossed out as 6 is divisible by 2), how many numbers are crossed out?
Answer: numbers.
Question 10:
It takes Bella three hours to clean a house. It takes Anna two hours to clean the house. How long would it take for them to clean it together?
Answer: minutes.
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