9 Ball Weight Question

What is the minimum number of weighings on a scale to determine the heavy ball. Compare the weight of two of those groups. For convenience sake let s name the balls 1 8.

ball lock keg qd jumper post ball like knot in neck ball lock keg post size ball lock beer line cleaning kit ball lock keg for wine ball lights for garden ball lock in vs out ball lock for trailer

Rules For 8 Ball And 9 Ball Pool Billiards Billiards Pool Balls

Pin On Health

Pin On All About You

95 Get This Wrong How Many Balls Toughest Puzzle On The

Missing The Important Shot Billiards Pool Pool Quotes Pool Balls

Advertisement Ebay Pool Table Billiard Ball Set Art Number Style

Now try to solve this on your own solution of 9 balls puzzle the optimal solution for 9 balls puzzle is three weighing s solutions are as follows three weighing s.

9 ball weight question. Interview question for analyst in london england puzzle 9 balls identical in appearance. If they balance then 9 10 11 12 have the odd ball so weigh 6 7 8 vs 9 10 11 with 3 possible outcomes. If 9 10 11 is heavy then they contain a heavy ball. Identify this heavier ball by using a scale twice.

If a1 a2 means all balls is group a are even. Else 9th ball is heavy as a was heavier than b. 8 are of same weight. Weigh it against any other ball to determine if heavy or light.

And ball in group b is of less weight. Weigh 2 sets of 4 balls against each other using a double pan balance and if you re lucky it will weigh evenly allowing identification of the not weighed 9th ball as the odd ball. Now choose 2 balls from this group and compare their weights and using the same logic as before the heavier ball will be obvious. This 9 balls puzzle problem is very similar to 8 balls weight puzzle where 8 identical looking balls are given and one of the balls is heavier than rest of the 7 balls.

The problem here is that you don t actually need to weigh a ball to get information about it. This will find you the heavier ball but it isn t the most efficient approach. If 6 7 8 vs 9 10 11 balances 12 is the odd ball. You have 9 balls that look identical but 1 is heavier than the rest.

You are given 8 identical looking balls. Stop further if we have to really identify defective ball we have divide 9 balls into a 3 b 3 and c 3 and this method is already explained above. Find the heavier ball. If the question to identify the odd ball heavy or light out of 9 balls is read literally then the answer is 1 weighing under the most luckiest of circumstances.

Sachin magdum july 11 2010 flag reply. The actual answer is. One of them is heavier than the rest of the 7 all the others weigh exactly the same. First we weigh 1 2 3 on the left and.

The heavier group should then be obvious it will either tip the scales or if the scales stay balanced then it is the group you didn t include. You a provided with a simple mechanical balance and you are restricted to only 2 uses.