You Have Eight Marbles And A Two Pan Balance

For convenience sake let s name the balls 1 8.

You have eight marbles and a two pan balance.

You may make no assumptions about how much heavier the heavy marble is. How would you find the heaviest marble if you are only allowed to weigh the marbles 2 times using the balance scale. All of the marbles weigh the same except for one which is heavier than all of the others. All of the marbles weigh the same except for one which is heavier than all of the others.

You are given 8 identical looking balls. Place a protractor and ruler in one pan. Each marble weighs 2 0 grams except for one which is slightly heavier at 2 05 grams. Divider scroll down for the solution.

Comparing these two in the last weighing would thus not tell which one is special since it could be either the lighter or the heavier one. Set up the second pan balance. First we weigh 1 2 3 on the left and. Add paper clips to the other pan one at a time counting as you go until the pans balance.

Instead you have to compare one of them l say with an ordinary marble like a just as was done in the case of 12 marbles. Software development engineering interview seattle wa. You have eight marbles and a two pan balance. You a provided with a simple mechanical balance and you are restricted to only 2 uses.

Suppose you have 8 marbles and a two pan balance used to compare the weight of 2 things. All of the marbles look the same. All of the marbles weigh the same except for one which is heavier than all of the others. One of them is heavier than the rest of the 7 all the others weigh exactly the same.

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. Find the heavier ball. The marbles are otherwise indistinguishable. If you have only one balance available sketch the results of the first pan balance situation on the board before setting up the second balance.

These differ from puzzles that assign weights to items in that only the relative mass of these items is relevant. Let s say you have 8 marbles and a two pan balance. All the marbles weigh the same except for one which is heavier than all the others. What is the minimum number of weighings needed to be certain of identifying the heavy marble.

Suppose you have 8 marbles and a two pan balance used to compare the weight of 2 things.