There are 12 table tennis characteristics, only one weight is abnormal, now requires three times with a weight of the weight, and finds the weight of the ball.
Grading:
It is done within 1.30 minutes: intelligence is very high and high, I don't know how high ...
Out of 2.60 minutes: intelligence is high.
3. During the two hours: the intelligence is quite high.
Out of 4.1 days or 1 week: intelligence is also very high, but also a perseverance.
Opening within 5.10: You or have done it before, or mostly a hierrarhe, Mon.
The answer will first divide the table tennis three groups, four each group, records A, B, and C. Put a, b in both ends of the balance (first). There are two results: the result, balance, that abnormally in the C group. Take two in the group in the first end (remember to the left) to take C There are two (second time) in groups, which knows which two in the abnormality. Take one of the left ends of the balance (third), one of the two people who are in the right end can know which one It is not normal.
Results II. Unbalanced, the abnormality in the A and B groups, the four records of the group A, so that four numbers in the group A1, A2, A3, A4. Group B For B1, B2, B3, B4, now take one of the group C, re-group 1 group of A1a2c, 2 groups A3A4B1, 3 group B2B3B4. Place 1, 2 in both ends (second time) ), If equilibrium, that abnormally in 3 groups B2B3B4, and is better than normal! Three, and it is known that light exceptions, as long as you can take two one, you can know it (the third time), 1, 2 groups are unbalanced, keep the original 1 group, then A1a2b1 three An abnormality, open A1a2 in both ends of the balance, A1, that is, the A1, Balance, is B1, which is b1.2 group, which is an abnormality of the A3A4, and it is more than normal, will put two put two It is possible (third time) on the balance. This can be called three times, and it can know that abnormal is lightweight.
