9 Gram Marbles Riddle

You must determine which of the 9 marbles is the heavier one using the balance only 2 times.

9 gram marbles riddle.

You are given a set of scales and 12 marbles. Find the 9 gram marbles there are ten bags containing marbles. There are three possible outcomes. Scale tilts left means the heavy coin is in group 1 2 3 scale tilts right means the heavy coin is in group 4 5 6 scale balances means the heavy coin is in group 7 8 9.

1 weighs 1 1 ounce. Put 1 2 3 on the left side and 4 5 6 on the right side. 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. 8 of them weigh 1 ounce each.

Nine of the bags contains only marbles weighting 10 grams each. 1 you have 9 marbles as seen. Here are some riddles for you to spend your free time trying to solve. Here is an interesting riddle involving 12 marbles and a balance scale.

Nine marbles you have 9 marbles. Lets start as always by numbering them 1 to 9. In any case on to the riddle. 3 you are allowed to use set the scale twice in total.

The scales are of the old balance variety. Each pill weighs 10 grams except for contaminated pills contained in one jar where each pill weighs 9 grams. That is a small dish hangs from each end of a rod that is balanced in the middle. The single 9 shows up as the rightmost digit in the sum of all the weights.

One of the bags contains only marbles weighing nine grams each. So let s do this. The remaining marble is slightly heavier than the others. Given a scale how could you tell which jar had the contaminated pills in just one measurement.

You have access to a balance scale containing 2 trays you may use the balance 2 times. We put 3 marbles on each pan for a total of 6 marbles on the pan and we leave 2 marbles off the pan. To find the contaminated jar follow this step wise approach. You don t know which is which.

One of the 12 marbles is irregular but you don t know whether it s heavier or lighte. The 9 marbles are all uniform in size appearance and shape. 2 8 of them are exactly the same weight. And if the marbles on the scale do not weigh the same then we know that one of the marbles on the scale is the heaviest and we can eliminate the marbles that are not on the scale.