Poisoned wine
You have 240 barrels of wine, one of which has been poisoned. After drinking the poisoned wine, one dies within 24 hours. You have 5 slaves whom you are willing to sacrifice in order to determine which barrel contains the poisoned wine. How do you achieve this in 48 hours?
can’t be done unless it is exactly 24 hrs not within 24 hrs
Agree. Needs to be exactly 24 hours not within. In that case, group the barrels into 20 groups containing 12 barrels each. Arrange them into 4 rows x 5 column matrix (of 12 barrel groups). Have each slave taste wine from 12 barrels out of every column (5 total) every hour. By the 24th hour (worst case) you’ll know which of the 4 barrels (from each column) is poisoned. Worst case you’ll have 3 slaves left. Have those 3 drink out of each of the remaining 3 barrels with fourth barrel left out. Within next 24 hours you’ll know which one for the remaining 4 is poisoned.
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