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If you have 9 balls and one is heavier than the rest how to pinpoint the heavy one by using the balance only once?
Wiki User
∙ 9y ago
The way to pinpoint the heaviest ball is as follows:
1 - Split the balls into three groups of three balls each.
2 - First use of the scale: Weigh any two groups against each other.
3 - If the groups weigh the same then the heavier ball is in the third group, otherwise it is in the group that weighs more.
4 - We now know that the heavy ball is one of three.
5 - Second use of the scale: Using the group of balls that we know contains the heavy ball, weigh any two balls against each other.
6 - If one of the balls is heavier then we have our answer. If the balls weigh the same then the third ball is the heavy one and we again have our answer.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoFirst balance Divide the balls into three groups of three. Put two groups on the balance, three balls per side. If they balance, the lighter ball in the third group. If one group is lighter (that side of the balance is higher), it's in that group. (You have determined which group of three the lighter ball is in, and now identify it with a second use of the balance.) Second balance Take any two of the balls from the group of three that contains the light ball and put them on the two sides of the balance. If they balance, it's the third ball. If they don't, it's the one that's higher in the air.
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How do you solve the nine ball riddle?
Separate the balls in 3 separate groups of 3 balls each. Get two groups of 3 and place it on either side of the balance. If the balance is the same then the probability is that the heavy ball is in the other group off the balance. Or if the ball was on the group in the balance it would be noticed right away also. After recognizing the heavier group, you take 2 balls from the remaining group and you weight them, if it's the same, then the remaining ball must be the heavier one, if not then you would automatically see it in the scale.
What is the comparative for the word heavy?
Comparative: heavy, heavier Superlative: heavy, heavier, heaviest
You have seven ducks that all look the same but one weighs more you can only use the scale two times. how do you find the heavier duck?
Weigh any four ducks, two on each side of the balance. If the scales don't balance, weigh the heavier pair, one on each side of the scale. You'll know which one is heavier. If the scales did NOT balance, put two of the three remaining ducks on the balance. If they don't balance, you'll see which is heavier. if they do balance, the heavy duck is the one that hasn't been weighed at all.
9 balls of same color and size One out of them is of different weight Given a weighing balance how you will identify the odd-one in fewest attempts?
Weigh 3 balls at a time. The set of 3 that weighs more will have the heavy ball in it. Now weigh each of those 3 balls one at a time. This method uses the scale 4 or less times, depending on how soon you are able to find the heavy ball.We cannot assume the ball is heavier.
What is the comparative adjectives for heavy?
Heavier is the comparative adjective for heavy. The superlative is heaviest.
You have 9 tennis balls. One is slightly heavier than the rest but you cannot tell by looking... or even holding. You also have a balance scale. How would you go about finding the heavy ball while usi?
Answer = Maximum of three steps to find heavy ball. Put one tennis ball aside and put the other 8 on the scale - 4 on each side. If the scale is balanced you're done - the one you put aside is the heavy ball If not Remove the 4 balls on the light side of the scale. The heavy ball is one of the four still on the scale. Spit these four in two on each side of the scale. Remove the two on the light side of the scale. The heavy ball is one of the two remaining balls on the scale. Split the two remaining balls. Your done. Solution #2 - heavier ball found in two steps: Step 1: group 9 balls in sets of 3. Reserve 3 balls(a), put 3 on each side of scale(b) and (c). Observe that heavier ball is in one of three sets, (a), (b) or (c) - either the scale side that dropped or the reserved set, if the scale balanced. Step 2: Split the set with the heavier ball - reserve one and place one on each side of the scale. Observe that heavier ball is one of the 3 balls, - either the scale side that dropped or the reserved ball, if the scale balanced. Solved in two steps.
How do you know when a balance bracelet is fake?
if the 2 small beads aint magnetic its fake if it does not have 9 balls its fake and if you can spin the crystal balls it fake
What is an superlative adjectives for heavy?
heaviest, heavier
Why are bowling balls heavy?
So the ball can pick up more speed. For example, if you drop a feather on the ground, it takes a longer time to fall than a heavier object, such as a notepad. A bowling ball is heavier to gain speed faster.
You are given 8 balls that are identical 1 of them is heavier than the rest You are given a scale and 2 attempt How do you find the heaviest ball?
The key here is to understand that the scale can distinguish 3 cases, not just 2.As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).The key here is to understand that the scale can distinguish 3 cases, not just 2.As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).The key here is to understand that the scale can distinguish 3 cases, not just 2.As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).The key here is to understand that the scale can distinguish 3 cases, not just 2.As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).
How heavy is chese?
As heavy as my balls.(PENIS)
How do you spell hevy?
It is spelled "heavy" with an "a".
