Thread: Quiz

FIND THE LIGHTEST COIN
8 pieces of same value of coins, one piece is a little lighter than the rest.
Use a balance weight that has a plate on its left and right to find out which piece is the lightest coin with the least number of times of weighing them.
Please tell number of times you weight them in order to find out the lightest coin and how?

Highlight text to see my answer
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The answer is 3

4 on the left 4 on the right, whichever 4 is lighter, you split to be 2 on the left 2 on the right, whichever is lighter, split to be one on the left one on the right... then you got the lightest coin

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Originally Posted by Watdaflip

Highlight text to see my answer
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No, Not good enough.

Has been viewed 40 times.
Where is the answer?

Viewed 60 times. Still no answer. Come on! Shall I give a reward?
OK. Now, Let you use two digital weights.
Find the lightest coin from 8 coins of same value, same size, made of same materials, from same currency but a piece is a bit slightly lighter than the rest. PLEASE use the least amount of time to weight them and find out the lightest piece.

Originally Posted by WSBlue

Viewed 60 times. Still no answer.

I posted an answer

Originally Posted by Watdaflip

I posted an answer

Yes. I saw and not good enough. Pleae try again and think out of a box.
Thank you.

I give, what's the answer?

Originally Posted by C L

I give, what's the answer?

Please tell how many times you need first before I tell you?

Originally Posted by WSBlue

Yes. I saw and not good enough. Pleae try again and think out of a box.
Thank you.

I figured that, but it was still an answer, even if it was wrong, you said there haven't been any.

Originally Posted by Watdaflip

I figured that, but it was still an answer, even if it was wrong, you said there haven't been any.

What did you mean?

3 ?

Originally Posted by Collectors-info

3 ?

No.
Please don't think too direct.

do you have to use the scale?

Originally Posted by Watdaflip

do you have to use the scale?

yes . use two scales at the same time to weight them, there is only a piece which is the lightest of all 8 pieces.

Originally Posted by Watdaflip

do you have to use the scale?

Of course, we don't really to take out two scales to do it here.
We just try to figure out how to do it by using the least amount of times to weight them in order to find the lightest piece.

ok, how about you put them all on the scale and take them off one by one, deducting the weight each time.

Originally Posted by C L

ok, how about you put them all on the scale and take them off one by one, deducting the weight each time.

How many times will this method be until you get the lightest piece?

one time, on 7 scales

Originally Posted by larazovich

one time, on 7 scales

What's that you say? I can't hear you over the fireworks!

Have you been drinking? You've got slippery feet, you're swaying today!

It's ok, have another, there's lots! PARTAY!

thanx, btw

(CL. I can't think well, drink too much. Please allow me to copy yours)

I agree with the guys, 3........and Liz only sways when the wind blows.

What's the answer?

Needs are 4

air, water, food & shelter...............lol

This quiz has been viewed 150 times. And still got no correct answer.
It means, everybody is good at different kind of things.

I wish I had a clever answer.....but I don't!

WSBlue it's time to tell us the answer....please

With 2 scales, 2 is the least.
1. the lightest pair on one scale
2. the lightest of the two

Is the answer 1... get it right the first try?

Originally Posted by bill2006

With 2 scales, 2 is the least.
1. the lightest pair on one scale
2. the lightest of the two

How do you know which pair is the lightest before you weight them.
You can weight them as many times as you want, but here, we want you to do it with the least number of times to find the lightest piece from 8 pieces, using two scales at the same times. Please try again.

Originally Posted by Watdaflip

Is the answer 1... get it right the first try?

No, not done by guessing or by luck.

Viewed 200 times. Where is the beef?

A lot of problem solvers here.
Why still no one here still can solve this one yet.
It has been here for 10 days and
has been viewed more than 200 times.
Come on. Please try.
Just don't think too direct.






If you give up and want to know how to do it just say so.
I or Vicki will tell you through your email. Won't you, Vicki?

Originally Posted by WSBlue

How do you know which pair is the lightest before you weight them.
You can weight them as many times as you want, but here, we want you to do it with the least number of times to find the lightest piece from 8 pieces, using two scales at the same times. Please try again.

3 Times
You don't know before you weigh them,
Step 1: randomly put 2 coins on each side of one scale and and do same for other scale. Discard heavier ones.
Step 2: place lighter pairs on one scale, discard heavier pair
Step 3: place one coin each side, discard heavier.

and of course there must be an easier way. lol

Okay ...

I am only gonna look for the shiny one in "gold" and I might not even weigh it ... so

0 times for me ...

Originally Posted by LadyEye

Okay ...

I am only gonna look for the shiny one in "gold" and I might not even weigh it ... so

0 times for me ...

For you, find the heaviest piece. LOL

lokl blue ...

okay ... 2 scales ... 8 coins ....

1. 4 coins on each scale, determine which scale is now the lightest, the lighter coin must be within that group of 4.
2. Take group of 4 and divide into two - we now have another set of two that contains the lighter coin ...
3. Take the lighter set of two coins and place one coin in each scale and find the lightest ...

helloooooooooooooooo .... that is too simple ...

Chris was right, he guessed 3 ....

What's so tough about that?

Where's the gold? That's the question, that's the real quiz Blue ...

Originally Posted by LadyEye

lokl blue ...

okay ... 2 scales ... 8 coins ....

1. 4 coins on each scale, determine which scale is now the lightest, the lighter coin must be within that group of 4.
2. Take group of 4 and divide into two - we now have another set of two that contains the lighter coin ...
3. Take the lighter set of two coins and place one coin in each scale and find the lightest ...

helloooooooooooooooo .... that is too simple ...

Chris was right, he guessed 3 ....

What's so tough about that?

Where's the gold? That's the question, that's the real quiz Blue ...

Thats what I said in the first post of the thread and apparently that is wrong

Originally Posted by Watdaflip

Thats what I said in the first post of the thread and apparently that is wrong

lol Wat ... ur right ... u did ... lol ...

well see, we are just too smart for blue ...

come on blue, give us the gold, lol

Lady, Shall we estimate how many pages it will go until it's solved ... ...Can it go until 20 pages?

WATDAFLIP, Don't you want to solve this one?

I see a lot of new members recently.
Come, try to solve these quizzes!

Originally Posted by WSBlue

WATDAFLIP, Don't you want to solve this one?

2...

Weigh 3 on the left, 3 on the right. If they weigh the same then weigh the last two and you will find the lighter one.

If one set of 3 weighs more then the other then take any 2 of those and weigh them. Once weighed, one will be lighter then the other or if they are the same then the last one of the 3 is the lightest

Originally Posted by Watdaflip

2...

Weigh 3 on the left, 3 on the right. If they weigh the same then weigh the last two and you will find the lighter one.

If one set of 3 weighs more then the other then take any 2 of those and weigh them. Once weighed, one will be lighter then the other or if they are the same then the last one of the 3 is the lightest

**Yes. C*o*n*g*r*a*t*u*l*a*t*i*o*n**

Want to try cutting a donut into 12 pieces?