There are nine oranges of equal size and shape and all except one (50gs heavier) are of the same weight. How can you identity which one? You can use a balance (weighing machine) only twice. You can keep the oranges on both the sides.
2006-07-28 09:11:53 · 11 answers · asked by chesskapagal 1 in Education & Reference ➔ Trivia
Step 1: split three and three on the scale, if it is equal then you have the heavier one identified to be one of the remaining three since the scale equals. (Proceed to step 3)
Step 2: If not then the side it tips to contains the heavier one. Take the three that the scale tipped to and proceed to step three
Step 3:So take the remaining three, pick two of them and place them on the scale. If they equal then the heavier one is the one of the three that is not on the scale. If they do not equal then obviously you have identified the heavier one on the tipped side of the scale
2006-07-28 09:19:56 · answer #1 · answered by dr. misako 2 · 2⤊ 0⤋
split the oranges into 3 groups of 3
weight 2 of these groups, this lets you identify the group of 3 the orange is in (the heavier group, or if they are equal its the third one)
then out of the group use 2 oranges and weight them and choose the heavier one if they are equal then its the third one
aw man i got beat
2006-07-28 16:22:30 · answer #2 · answered by Alex P 2 · 0⤊ 0⤋
u have to divide oranges into 2 equal groups and compare it's weight. then choose the heavier group and take in your opinion the heviest orange and compare it with any other one. can be any other way? :| i don't know...
2006-07-28 16:16:03 · answer #3 · answered by noktris 2 · 0⤊ 0⤋
If you're in the Earth's atmosphere, the heavier one will fall faster if you drop it.
Dr. Misako below has the right answer although it is worded somewhat poorly.
2006-07-28 16:16:02 · answer #4 · answered by Pete 2 · 0⤊ 0⤋
It's juicier put four on each side and the nineth on both side and weigh
2006-07-28 16:14:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I don't think it can be done unless you get to use the scale at least eight times.
2006-07-28 16:14:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I thought I finished those questions in school.
2006-07-28 16:16:20 · answer #7 · answered by driver 5 · 0⤊ 0⤋
The nineth one.
2006-07-28 16:18:16 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Throw them at a fat kid and see which one makes him scream loudest.
2006-07-28 16:19:51 · answer #9 · answered by Oli 3 · 0⤊ 0⤋
squeeze them all into seperate glasses and see which gives more juice.
2006-07-28 16:14:59 · answer #10 · answered by manda 2 · 0⤊ 0⤋