9 Gram Marbles Riddle

2 8 of them are exactly the same weight.

9 gram marbles riddle.

There are three possible outcomes. The scales are of the old balance variety. You have access to a balance scale containing 2 trays you may use the balance 2 times. Each pill weighs 10 grams except for contaminated pills contained in one jar where each pill weighs 9 grams.

The 9 marbles are all uniform in size appearance and shape. One of the bags contains only marbles weighing nine grams each. In other words you get to take 2 measurements or comparisons here. 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.

1 weighs 1 1 ounce. That is a small dish hangs from each end of a rod that is balanced in the middle. Here is an interesting riddle involving 12 marbles and a balance scale. 3 you are allowed to use set the scale twice in total.

Lets start as always by numbering them 1 to 9. We put 3 marbles on each pan for a total of 6 marbles on the pan and we leave 2 marbles off the pan. So let s do this. 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.

Nine marbles you have 9 marbles. One of the 12 marbles is irregular but you don t know whether it s heavier or lighte. A rightmost 7 means it is the third bag with the 9 gram marbles. To find the contaminated jar follow this step wise approach.

The remaining marble is slightly heavier than the others. Find the 9 gram marbles there are ten bags containing marbles. 8 of them weigh 1 ounce each. Nine of the bags contains only marbles weighting 10 grams each.

Given a scale how could you tell which jar had the contaminated pills in just one measurement. Put 1 2 3 on the left side and 4 5 6 on the right side. The single 9 shows up as the rightmost digit in the sum of all the weights. You don t know which is which.

1 you have 9 marbles as seen. You are given a set of scales and 12 marbles. In any case on to the riddle. You must determine which of the 9 marbles is the heavier one using the balance only 2 times.