and just weigh the bags together. seanbobe wrote: Think about the problem(s) and post your answer(s) or riddles. That’s all for 9 balls Puzzle, If you liked it, please share your thoughts in a comments section and share it with others … 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 coin or 2 is a light different coin. What are the disadvantages of primary group? Well, if it's a balance scale, he can put half the coins on one side and half on the other and note which side sinks (the side with all the gold coins) and which rises (she side with the fake gold coin).Then he can swap one coin for another from opposite sides. You take one coin from the first bag, two coins from the second, and three from the third and you put all 6 coins on the scale and weigh them. Now … If it was 6 pounds 3 ounces then it would be bag C and 6 lbs one oz would be bag A. Alternatively, since you decide the amount of coins in each bag you could specifically say that you want one coin in the first bag two coins in the second, three in the third etc. If the scale shows a weight of 3.2 lbs, then Bag #1 contains the real gold. To identify that bag, Ishita can follow a simple procedure. Riddle: My scale is something that does not weigh in grams, ounces, or pounds. 11. So take the 2 coins from that group and use the scale to determine the counterfeit coin. She should take out 1 coin from the 1st bag, 2 coins from the 2nd bag, 3 coins from the 3rd bag and similarly 10 coins from the 10th bag. Murder Case)where the inspector gets a riddle, you might enjoy: Mr Brandt: "In a room, are several sacks of gold pieces, as many sacks as you like. If the scale shows a weight of 3.1 lbs, then Bag #2 contains the real gold. Hint: There is a 50/50 chance of each toss being either heads or tails. https://www.popularmechanics.com/technology/a24023/riddle-of-the-week-4 The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. He kept walking and found yet again, a penny. C: "So I put the penny in and I get a card and that tells me how much the weight of the gold is." You are blindfolded and cannot discern whether a coin is heads up or tails up by feeling it. So you put the penny in and you get a card and that tells you how much the weight of the gold is. For example, if you’re a teacher, put a riddle or two at the end of the math quiz and offer extra credit for every right answer . It is known that there is only one bag with forgeries. Please remember to spoiler-tag all guesses, like so: Most users: https://i.imgur.com/SWHRR9M.jpg, Using markdown editor or old Reddit: >!spoiler text between these symbols!