How to find a ball which is either more or less in wt among other 11 balls out of 12, with3 chance and balance
356709
We think that the thing to do is weigh six balls against six balls, but if you think about it, this would give us no information the only different ball. As we already know that one side will be heavier than the other. \n\nSo that the following plan can be followed, let us number the balls from 1 to 12. For the first weighing let us put on the left pan balls 1,2,3,4 and on the right pan balls 5,6,7,8. \n\nThere are two possibilities. Either they balance, or they don't. If they balance, then the different balls is in the group 9,10,11,12. So for our second weighing we would put 1,2 in the left pan and 9,10 on the right. If these balance then the different ball is either 11 or 12. \n\nWeigh ball 1 against 11. If they balance, the different ball is number 12. If they do not balance, then 11 is the different ball. \n\nIf 1,2 vs 9,10 do not balance, then the different ball is either 9 or 10. Again, weigh 1 against 9. If they balance, the different ball is number 10, otherwise it is number 9. \n\nThat was the easy part. \n\nWhat if the first weighing 1,2,3,4 vs 5,6,7,8 does not balance? Then any one of these balls could be the different ball. Now, in order to proceed, we must keep track of which side is heavy for each of the following weighings. \n\nSuppose that 5,6,7,8 is the heavy side. We now weigh 1,5,6 against 2,7,8. If they balance, then the ball is either 3 or 4. Weigh 4 against 9, a known good ball. If they balance then the different ball is 3, otherwise it is 4. \n\nNow, if 1,5,6 vs 2,7,8 does not balance, and 2,7,8 is the heavy side, then either 7 or 8 is a different, heavy ball, or 1 is a different, light ball. \n\nFor the third weighing, weigh 7 against 8. Whichever side is heavy is the different ball. If they balance, then 1 is the different ball. Should the weighing of 1,5, 6 vs 2,7,8 show 1,5,6 to be the heavy side, then either 5 or 6 is a different heavy ball or 2 is a light different ball. Weigh 5 against 6. The heavier one is the different ball. If they balance, then 2 is a different light ball.
894660
The previous answer(s) overlook the possibility that 0 balls can be selected from any color (i.e. 11,10, and 8 choices respectively), as long as all three numbers aren't zero. So it's:\n\n(10+1)*(9+1)*(7+1) - 1 = 879
534591
Two\n\nWeigh ABC against DEF\n\nIf the balance tilts, take the lighter group and weigh one ball against a second one. If it tilts take the lighter ball, If it doesn't tilt, it must be the third ball of that group of 3 balls.\n\nIf ABC weigh the same as DEF, weigh G against H, take the lighter one if it tilts. take I if G and H weigh the same as one another.\n\nTwo weighings suffice.
926957
http://www.psadna.com/ball/ballprocess.chtml
1168507
Here is one example...the bouncing ball. Just google that in and you get a bunch of results.
128870
Try supertrick http://www.google.com/search?btnI=I%27m+Feeling+Lucky&q=supertrick
498095
A two piece ball like Pinnacle will go the distance.  Balls that spin will not go as far
111021
If you are sloving for X then anything greater than 2 will work. basically it is 6 time what (X) will be greater than 12. Well 6x2=12 so that won't work.
402289
Seperate balls in 3 packs of 3.\n\nFirst weigh pack 1 against pack 2. If both are the same, then your heavy ball is in pack 3. If one weighs more, you ball is in that pack.\n\nSecond you weigh 2 balls in the heavy pack. If both balls are the same, it's the 3rd ball. If one weighs more, that's your ball.\n\nToodles.
1141841
choose low numbers,,, 2.25 bicoastal..\n3.10  papal bull..3.50 nighttime . 4.25  blue monday..4.55 galient 5.30 pearly king..\nsend me my share of winnings
622598
1. Weigh three against the other three. If the two groups weigh the same, the seventh ball is the cue ball. If the two groups do not weigh the same, proceed to step 2.\n\n2. Weigh two balls of the lighter group. If those two weigh the same, the third ball is the cue ball. If they do not weigh the same, the lighter ball is the cue ball.\n\nQED
1126464
Check out Three Ball Charlie:\n\nhttp://sideshowworld.com/ats3ball.html
1094028
Most of them got it right.\n\nThis is another way to think about the result.\n\nFirst player = T or H doesn't matter\n\nSecond Player = Must be that same as the First Player\n                        =  only 2 possibility (H or T)\n                        = 1/2\nThird Player = Must be the same as First Player\n                    = again, only 2 possibility ( H or T )\n                    = 1/2\n\nIn order for the Second Player and Third Player to have the same result as First Plaer = 1/2 x 1/2\n                                 = 1/4.
741729
there is a 1/8 probablity of getting heads every toss after 3 tosses
392970
one ball on the pitch, but you might have 4 extras on the side lines for throwings and if the ball gets flat.\nt
839810
http://www.littlewoods-pools.co.uk/\nmuch easier online mate\nIt is a better bet than the lottery which is completely random whereas football is not.
621308
Ask your magic 8-ball. The answers you get are VERY veliable.\n\nTrust me.