A short fun riddle regarding 9 marbles a balance and a 2 measurement limit.
9 marbles riddle answer.
You will discover that there is only one line where only one of statements one two and three are true.
Scale tilts left means the heavy coin is in group 1 2 3.
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If they balance the different coin is number 12.
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He fills the jars with the marbles put the two jars behind his back and tell you to pick one of them at random.
So for our second weighing we would put 1 2 in the left pan and 9 10 on the right.
The single 9 shows up as the rightmost digit in the sum of all the weights.
Not nearly as difficult as the the previous two problems of this type.
He proposes a game.
There are three possible outcomes.
A rightmost 7 means it is the third bag with the 9 gram marbles.
Weigh coin 1 against 11.
Mark will have to give sam 5 marbles.
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If these balance then the different coin is either 11 or 12.
Mary is not a nurse.
If they do not balance then 11 is the different coin.
Test your math skills and word play with answers included.
Lets start as always by numbering them 1 to 9.
If the number of grams ends in 8 it is the second bag with the 9 gram marbles because 2 times 9 equals 18 and that will be added to the total producing a number ending in 8.
Put 1 2 3 on the left side and 4 5 6 on the right side.
You ll then close your eyes he ll hand you the jar you picked and you ll pick a random marble from that jar.
Next fill in the chart according to statements 1 through 3.
If 1 2 vs 9 10 do not balance then the different coin is either 9 or 10.