Brain Teaser: What is the optimum choice of weights for a balance?

Brain Teaser: What is the optimum choice of weights for a balance?
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Brain Teaser: What was / is Gramps using the scale for?
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Related questions

Brain Teaser - Indivisibility properties of sequence of numbers?

Description : Brain Teaser - Indivisibility properties of sequence of numbers?

Last Answer : Mmmm homework =)

Brain Teaser: Why does this trick work?

Description : Brain Teaser: Why does this trick work?

Last Answer : Let's try it. Starting: 4 6 20 800 38 72 First iteration, replacing 4 and 38: (4 * 38) + (4 + 38) = 152 + 42 = 194 Result (new number in italics): 194 6 20 800 72 Second iteration, replacing 6 and ... two left. How am I going to get to one, and how am I going to get an odd number out of all evens?

Brain Teaser (light) - How well do you understand weighted averages?

Description : Brain Teaser (light) - How well do you understand weighted averages?

Last Answer : The final grade is greater than 88 (which would be the grade if they were all waited equally. Since the higher grades are both worth more than the lower grade, the final grade must be greater than that). The ... m willing to bet we can say more than that, but this is as far as I get right now .

Brain Teaser - Working with numbers that don't divide into one another?

Description : Brain Teaser - Working with numbers that don't divide into one another?

Last Answer : 1) Write all of those numbers in the form: 2^k * m where m is an odd integer and k is a non-negative integer. Obviously m < 50. Since we have 25 odd numbers less than 50 if we pick 26 numbers between 1 and ... and hence n is at least 3 m. Hence k is larger than l. For (3) I should think a bit more.

Brain Teaser - How does this work?

Description : Brain Teaser - How does this work?

Last Answer : Starting with n numbers a(1), a(2), ..., a(n) we will always end up with (a(1)+1) ( a(2)+1)...(a(n)+1) -1. The reason is that ab+a+b = (a+1)(b+1) - 1 One way to prove the above ... .(a(n)+1) -1 Calculating (a+1)(b+1)-1 proves the statement for n, which shows the statement is true by induction on n.

Can you solve this easy brain teaser?

Description : Can you solve this easy brain teaser?

Last Answer : LOL! The question alone fries my tiny elephant brain!

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Description : Can anyone please help me recall this brain teaser?

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Description : Brain Teaser: How well can you trust your intution?

Last Answer : My brain hurts just reading this question.

Brain Teaser: Can you find the heaviest and the lightest in 4 weighings?

Description : Brain Teaser: Can you find the heaviest and the lightest in 4 weighings?

Last Answer : Stop it!;)

Brain Teaser: Can you solve the loopy Treasure Hunt problem?

Description : Brain Teaser: Can you solve the loopy Treasure Hunt problem?

Last Answer : Is it NP complete?

Brain Teaser: How well do you understand weighted averages?

Description : Brain Teaser: How well do you understand weighted averages?

Last Answer : I think most people do understand weighted averages, they just don't know that they do. Is there any difference between the problem you wrote and this problem?: If 5 students score 10 points on a ... again, I've never understood exactly what a weighted average is. is the answer 3 liters/students?

Brain Teaser - Do you understand conditional probability?

Description : Brain Teaser - Do you understand conditional probability?

Last Answer : 50/50 Thinks harder and questions himself, are we right?

Brain Teaser: Can you figure out why this method works for finding the day of the week for a calendar date?

Description : Brain Teaser: Can you figure out why this method works for finding the day of the week for a calendar date?

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Brain Teaser - Can you explain how this works without using algebra?

Description : Brain Teaser - Can you explain how this works without using algebra?

Last Answer : It depends on the cost of the item, doesn’t it?

Another brain teaser?

Description : Another brain teaser?

Last Answer : Not sure on this one but the way I see it is as a red tile is not removed from the wheel each time it is hit the odds of hitting a red the second time is exactly the same as the first time and so on ... reds to show up in a row while he is waiting for 3 (assuming that it does go green red red red).

A brain teaser to shake off winter doldrums?

Description : A brain teaser to shake off winter doldrums?

Last Answer : 24? I just wanna know the answer now because I am sure it is something obvious I am overlooking.

Brain Teaser?

Description : Brain Teaser?

Last Answer : This drove me crazy the first time I saw it, and it still bothers me.

Can you handle this algebraic brain teaser?

Description : Can you handle this algebraic brain teaser?

Last Answer : 0 and 1

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Description : Brain Teaser - How can you determine if date intervals intersect?

Last Answer : * Head asplodes * (That would be no.)

Brain Teaser - Can you find an explanation as simple as the answer.

Description : Brain Teaser - Can you find an explanation as simple as the answer.

Last Answer : You will end up with a dollar's worth of change. Let's say the item costs $1.10. You therefore have 10 cents. When you pay with $2.00 you will get 90 cents back. 90+10=100. If it cost $1. ... of a dollar that equals $1.00 minus what you already have. That plus what you have will always equal $1.00.

Brain Teaser - Can you complete this proof that everyone (yes, including you) ought to know?

Description : Brain Teaser - Can you complete this proof that everyone (yes, including you) ought to know?

Last Answer : or, if you prefer, explain why you do not see any way that knowing this proof will make you a better person I engage in a utilitarian viewpoint of better or worse. This has no application to my life ... I do have a solution. Why don't you explain to me why you think I should share it with you?

Brain Teaser?

Description : Brain Teaser?

Last Answer : answer:Hide. Am I supposed to make a riddle now?

Brain Teaser 8/8/08?

Description : Brain Teaser 8/8/08?

Last Answer : corned beef and cabbage

Before he turned physics upside down, a young Albert Einstein supposedly showed off his genius by devising a complex riddle involving a stolen exotic fish and a long list of suspects. Can you resist tackling a brain teaser written by one of the smartest people in history? Dan Van der Vieren shows how. -Riddles

Description : Before he turned physics upside down, a young Albert Einstein supposedly showed off his genius by devising a complex riddle involving a stolen exotic fish and a long list of suspects. Can you resist ... written by one of the smartest people in history? Dan Van der Vieren shows how. -Riddles

Last Answer : The key is that the person at the back of the line who can see everyone else's hats can use the words 'black' or 'white' to communicate some coded information. So what meaning can be assigned ... . And every time this happens, the next person in line will switch the parity they expect to see.

What does brain teaser orseman mean?

Description : What does brain teaser orseman mean?

Last Answer : equestrian without the H

What does the brain teaser Tor over Toe mean?

Description : What does the brain teaser Tor over Toe mean?

Last Answer : Tore overtow

What is the answer to the brain teaser an in o in job?

Description : What is the answer to the brain teaser an in o in job?

Last Answer : Feel Free to Answer

What does 'A rest you're' mean brain teaser?

Description : What does 'A rest you're' mean brain teaser?

Last Answer : What is the answer ?

What does brain teaser kend vacation mean?

Description : What does brain teaser kend vacation mean?

Last Answer : What is the answer ?

What is the answer for the hidden meaning brain teaser COUNTING U?

Description : What is the answer for the hidden meaning brain teaser COUNTING U?

Last Answer : Need answer

What is the hidden meaning brain teaser loosen?

Description : What is the hidden meaning brain teaser loosen?

Last Answer : Brain teaser questions require you to answer an unusual or abstract question, developing a suitable answer based on logic, analysis and hypothesis. They are used to assess your capability to solve a complex problem via a clear thought process.

Jack has 8 bricks 7 of them weights the same amount and one is slightly heavier. Using a balance scale, how can Jack find the heavier brick in two weighings? -Riddles

Description : Jack has 8 bricks 7 of them weights the same amount and one is slightly heavier. Using a balance scale, how can Jack find the heavier brick in two weighings? -Riddles

Last Answer : First he split them in to piles of 3, 3, and 2 bricks. Then he weighs both groups of 3 with each other. If they balance he knows the brick is one of the 2 unweighed bricks and he can weigh ... will know the brick left unweighed is heavier, or if they do not balance, he will find the heavier one.

what- houston is using a balance in his chemistry class. There are ten 1-gram weights and an unknown weight of a solid compound on the left side. There are twelve 1-gram weights on the right side.?

Description : what- houston is using a balance in his chemistry class. There are ten 1-gram weights and an unknown weight of a solid compound on the left side. There are twelve 1-gram weights on the right side.?

Last Answer : houston writes the following equation to represent this situation:10 + q = 12Houston takes ten 1-gram weights off each side.Which property of equality does this represent?answer: subtraction property of equality

All the following complexes show decrease in their weights when placed in a magnetic balance then the group of complexes having tetrahedral geometry i

Description : All the following complexes show decrease in their weights when placed in a magnetic balance then the group of complexes having tetrahedral geometry i

Last Answer : All the following complexes show decrease in their weights when placed in a magnetic balance then the group of ... III C. I,III,IV D. none of these

The type of spring used to measure weights in spring balance is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring

Description : The type of spring used to measure weights in spring balance is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring

Last Answer : (A) Helical extension spring

Is it possible to solve a magic square made up of a system of unknown symbols?

Description : Is it possible to solve a magic square made up of a system of unknown symbols?

Last Answer : No. I could populate a 9×9 magic square with the letters A through I. You would never figure out what numbers were represented by the letters because a 9×9 magic square is not unique.

Did we invent math,or did we discover it?

Description : Did we invent math,or did we discover it?

Last Answer : God invented it.

How many of you can pass this simple test?

Description : How many of you can pass this simple test?

Last Answer : I can.

How can two infinite sets not have one to one correspondence with each other?

Description : How can two infinite sets not have one to one correspondence with each other?

Last Answer : You've missed what an infinite set means. Consider this definition: Infinite sets are the sets containing an uncountable or infinite number of elements. Infinite sets are also called uncountable sets. That is ... . Or for the set of all positive integers and the set of all negative integers .

Using the rays in the diagram, how many different acute angles can be formed?

Description : Using the rays in the diagram, how many different acute angles can be formed?

Last Answer : We don’t do your homework, but this is a simple combinatorics problem. Any pair of those rays will form an acute angle. How many pairs are there?

Can someone help me with my math assignment?

Description : Can someone help me with my math assignment?

Last Answer : We don't do people's homework here, but we can help in other ways. For instance, some of us can suggest an approach. One would hope, though, that your instructor has already prepared you to ... you take your shot at answering the question, and then post your answer and ask if others will comment?

What’s 0.222222222... as a simplified fraction?

Description : What’s 0.222222222... as a simplified fraction?

Last Answer : 2/9

If somebody choose two digit and three digit numbers and their difference is 989.What will be their sum? a) 1000 b)1010 c) 1006?

Description : If somebody choose two digit and three digit numbers and their difference is 989.What will be their sum? a) 1000 b)1010 c) 1006?

Last Answer : None of the above. Let x be the three digit number and y be the two digit number. x - y =989. x = 989 + y. x is obviously greater than 989 and less than 1000 (since it is three digits). Since y is a two digit number ... 989 + 10 = 999. We can't go any higher, so x =999 and y=10. x+y = 999+10 = 1009

What do you think of this YouTube video on why you can't divide by zero?

Description : What do you think of this YouTube video on why you can't divide by zero?

Last Answer : Also are the symbols for Eternity and infinity the same? ∞

Have you ever forgotten something that you didn't think you ever COULD forget?

Description : Have you ever forgotten something that you didn't think you ever COULD forget?

Last Answer : I still forget my neighbours name. I have known her for 3 years. I forgotten the quadric equation. I remember some math mnemonics but had to look up SOHCAHTOA and roy'g'biv to answer this question. I ... simple things every now and again , and have to look them up online , Fluther , or call family.

How many miles will a person run during a 10 kilometer race?

Description : How many miles will a person run during a 10 kilometer race?

Last Answer : What kind of mile? There are many.

A magazine company conducted a phone survey asking subscribers to identify the brand of outdoor camping equipment they like best. Every subscriber was surveyed, and the results were printed in an article titled “Most Popular Equipment among All Campers.” Why is the title of the article misleading?

Description : A magazine company conducted a phone survey asking subscribers to identify the brand of outdoor camping equipment they like best. Every subscriber was surveyed, and the results were printed in an article titled “Most Popular Equipment among All Campers.” Why is the title of the article misleading?

Last Answer : For view, of course. Edit: ok, now I confused. Are you asking what makes the title misleading, or why the magazine makes the misleading title?

Is there a calculation in which infinities cancels out?

Description : Is there a calculation in which infinities cancels out?

Last Answer : There are many asymptotic functions that are expressed as the x or y value approaches infinity. They are not at all uncommon. And the ratio of two such functions would define something like a line. Students of Analytic Geometry as well as Calculus are quite familiar with the occurrence of infinity.

Why do polls say that they are accurate + - 3.00% of the time 19/20?

Description : Why do polls say that they are accurate + - 3.00% of the time 19/20?

Last Answer : Maybe it should be + – 3.05%

What do you think of this paper?

Description : What do you think of this paper?

Last Answer : The Riemann Hypothesis is one of the most famous of all mathematical problems. If it had been proved it would be newsworthy and we would have heard about it. I am not a mathematician but this proof must be wrong. Scott Aaronson’s blog might be of some help.