MATH wizs please help



I got a math problem for all of you.

you are given 12 coins and a weight balance (seasaw thing), you need to find out which coin is the bogest on telling weather it is light or heavy. You can only weigh it 3 time to find the answer.

Tankz for your time.


Classic problem. The solution here:


I’m not reading throguh all of that. :stuck_out_tongue:
So the simply answer is…

Number all the coins 1-12 and put them into groups of three.

Weighing 1
Now weigh coins 1-3 against 4-6. If same weight move on to weighing 2 if not move onto weighing 3.

Weighing 2
Weigh coins 7-9 against 10-12. One of these sets of 3 coins will be lighter.

Weighing 3
Now take the three sets of coins that are in the group that are lighter and pick two of them. Weigh them against each other. If there are the same weight then the unweighed coin is the light one.

Volia. hehehehe. I like these things. More I say more.


0/10 for having failed to understand the question.


Math Q: what is the volume of a point? The thickness of a line?
Science Q: what is the real name of the star closest to earth?
Garbage culture Q: who did Marcia dump for a date with Doug Simpson?

No peeking on google…


The Sun! What do i win?!? :stuck_out_tongue:


You :confused:


I thought it was Helios. BTW, it burns out in 5,000,000,000 years. Make your plans now.


ehh the biggest coin is gonna weigh the most is it is all the same metal you need to be specific


Maybe the biggest coin is hollow :wink:



If Marcia dumped me I’d have to make a move on Alice next. :stuck_out_tongue: