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| Answer: 2 attempts. |
| Many responses came with 3 attempts. See the solution below. |
| Out of the 8 balls, we take 3 and 3 balls into the two pans of the balance. |
| [Our mind tendency is that it divides 8 balls into two sets of 4 each, which leads to 3 attempts.] |
| If the pans are balanced then the faulty ball is in the remaining 2 balls. |
| With the second attempt we can figure it out. |
| If the pans are not balanced then the less weighing pan is having the faulty one. |
| Now out of the 3 balls in that pan, we take two and put them one in each pan. |
| If they balance, then the remaining one is the faulty one. |
| If not, less weighing ball is the faulty one. |
| Winners:Raghu Ayinapurapu followed by Sravya Ainapurapu, Rajeswararao Ainapurapu, Sumanth Nethi. |
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