Quiz

[WSBlue]

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?

[Watdaflip]

Re: Quiz

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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[WSBlue]

Re: Quiz

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

[WSBlue]

Re: Quiz

Has been viewed 40 times.
Where is the answer?

[WSBlue]

Re: Quiz

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.

[Watdaflip]

Re: Quiz

Viewed 60 times. Still no answer.

I posted an answer

[WSBlue]

Re: Quiz

I posted an answer

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

[C L]

Re: Quiz

I give, what's the answer?

[WSBlue]

Re: Quiz

I give, what's the answer?

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

[Watdaflip]

Re: Quiz

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.

[WSBlue]

Re: Quiz

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?

[Collectors-info]

Re: Quiz

3 ?

[WSBlue]

Re: Quiz

3 ?

No.
Please don't think too direct.

[Watdaflip]

Re: Quiz

do you have to use the scale?

[WSBlue]

Re: Quiz

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.