Weighing 9 Marbles

Let s name them for easy understanding.

Weighing 9 marbles.

Therefore 2n must be less than 9 which means than n must be 4 or less. You have access to a balance scale containing 2 trays you may use the balance 2 times. 2 8 of them are exactly the same. They all weigh the same except one.

Nine marbles you have 9 marbles. So when comparing two groups of marbles there can be two outcomes 1. 1 weighs 1 1 ounce. You must determine which of the 9 marbles is the heavier one using the balance only 2 times.

Red and blue marbles puzzle you have given 50 red marbles 50 blue marbles and two empty jars. 1 you have 9 marbles as seen. You can put things in the little buckets and the scale will tip to the heavier side. If 5 6 7 8 1 2 3 4 then either 5 6 7 8 contains a heavy ball or 1 2 3 4 contains a light ball so weigh 1 2 5 vs 3 6 12 with 3 possible outcomes.

If 1 2 5 vs 3 6 12 balances then either 4 is the odd light ball or 7 or 8 is the. 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. You have to put all the. You have 12 marbles.

You have a balance scale. In any case on to the riddle. These differ from puzzles that assign weights to items in that only the relative mass of these items is relevant. A balance puzzle or weighing puzzle is a logic puzzle about balancing items often coins to determine which holds a different value by using balance scales a limited number of times.

8 of them weigh 1 ounce each. Now we already know that one of the marbles is heavier than the rest. A real weight balance or scale looks slightly like the apparatus i drew above. Weigh 9 vs 10 if balanced then 11 is the odd light ball else the lighter of 9 or 10 is the odd light ball.

One of them weig. You don t know if that one is heavier or lighter. Yeah i probably shouldn t have even bothered with the picture. There are two variants of the same question the easier of the two has been stated here.

With 13 marbles this would imply that 9 marbles or more are involved in the first weighing.