Three machines A B & C producing equal size and same colour balls of 10 gm each. Due to some problem one machine start producing balls of 11 gm. You need to tell which is that machine. You can also use weighing machine but only once.
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Step-by-step explanation:
Let's three machines are A,B & C. Let's take 1 ball from A , two ball from B & three ball from C. Then we took total 6 balls. Total weight should be 60 gram. If total weight is 61 g then problem is in machine A as we took one ball from machine A. If it is 62g then problem is in machine B as we took two ball from B. If total weight is 63 g then problem is in machine C as we took 3 balls from It.
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