Ishita has 10 bags full of coins. Each bag contains 1000 coins. But one bag is full of forgeries, and she just can’t recall which one. She does know that genuine coins weigh 1 gram, but forgeries weigh 1.1 grams. To hide the fact that she can’t recall which bag contains forgeries, she needs your help. How can she identify the bag with the forgeries with just one weighing?
It is known that there is only one bag with forgeries. To identify that bag, Ishita can follow a simple procedure. 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.
Now she should simply weigh all these picked coins together.
If there were no forgeries, then the total weight should be (1+2+3+ . . . +10) = 55 grams.
Now, if the total weight comes out to be 55.3 then she can conclude that the 3rd bag contain forgeries. So, if the total weight is (55.n), then it is clear that the nth bag contain forgeries.
- Puzzle 24 | (10 Coins Puzzle)
- Puzzle 39 | (100 coins puzzle)
- Puzzle 11 | (1000 Coins and 10 Bags)
- Puzzle 20 | (5 Pirates and 100 Gold Coins)
- Puzzle | 3 Glass and 10 Coins
- Puzzle | Guess the total number of coins
- Puzzle 15 | (Camel and Banana Puzzle)
- Puzzle 27 | (Hourglasses Puzzle)
- Puzzle 28 | (Newspaper Puzzle)
- Puzzle 29 | (Car Wheel Puzzle)
- Puzzle 31 | (Minimum cut Puzzle)
- Puzzle 33 | ( Rs 500 Note Puzzle )
- Puzzle 34 | (Prisoner and Policeman Puzzle)
- Puzzle 36 | (Matchstick Puzzle)
- Puzzle 38 | (Tic Tac Toe Puzzle)
- Puzzle 51| Cheryl’s Birthday Puzzle and Solution
- Puzzle 81 | 100 people in a circle with gun puzzle
- Puzzle 85 | Chain Link Puzzle
- Puzzle | Elevator Puzzle
- Puzzle | 3 Priests and 3 devils Puzzle
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Improved By : Chinmoy Lenka