12 Marbles Riddle

They all weigh the same except one.

12 marbles riddle. In general if you have n weights at your disposal you can solve the puzzle up to 3 n marbles included. You don t know if that one is heavier or lighter. You have a balancing scale you can use to find this marble and figure out if it weighs more or less than the others. One of the marbles is heavier in weight than the rest.

12 marbles written on 3 23 am by vja students you have twelve marbles. So another perfectly valid solution to the 12 marbles puzzle might even be. If a black marble comes out you know that has to be the black marbles box so you put the black label on it. The scales are of the old balance variety.

Since you know that the box is labeled incorrectly it must have all black marbles or all white marbles. You have 12 marbles. What is the minimum number of weighings required to do this. If they balance then the different marble is in the group 9 10 11 12.

Eleven of the marbles are of equal weight but one is heavier or lighter. You can perform up to a maximum of three weighings to find out which marble has the different weight and if it is heavier or lighter than the others. For the first weighing let us put on the left pan marbles 1 2 3 4 and on the right pan marbles 5 6 7 8. Either they balance or they don t.

You have a balance scale. The one labeled both. Split the marbles into 3 groups with 4 marbles each. You are given a set of scales and 12 marbles.

If 1 2 5 vs 3 6 12 balances then either 4 is the odd light ball or 7 or 8 is the odd heavy ball. That is a small dish hangs from each end of a rod that is balanced in the middle. If 3 6 12 is heavy then either 6 is the odd heavy ball or 1 or 2 is the odd light ball. 12 marbles problem.

How can you find the heavier marble by using a balance scale only thrice. You have twelve marbles that are identical in size shape and color. Pick 2 groups and use the scale to determine which group contains. 2v2 8 xy 1v1 0 z 3v3 2 xy 1v1 1 z 1v1 0 which requires only two weights in one third of the cases.