Nora is throwing a party at her house. She has eight friends coming over.She and her friends love apple juice so she had bought nine bottles of apple juice before at her house.
Now comes the real question..........
Right now it's 6:00 pm and the party starts at 7:00 so a troublemaker maker calls Nora and tells her that one of the nine bottles are poisoned he had left 2 mice each mice can take a drop of apple juice and die after 30 mins if the drop the mouse had taken is poisoned
She has 1 hour and nine bottles of apple juice any one of the bottles could be poisoned
How will she figure out which bottle is poisoned????
Answers
Answer:
she give this apple juice to the mice
Nora can mix juice in bottle 1,2and 3 and give to one mouse and give mixture of 3,4 and 5th bottle to 2nd mouse.
case 1)At 6:30 if mouse 1 dies and mouse 2 don't die then 1 out of bottle 1,2 or 3 is poisened.
•In this case at 6:30 i.e (second half hour ) (here since mouse 2 did not die although it drank juice from bottle 3 there fore , juice from bottle 3 isn't poisonous and we are left only with bottle 1 or 2)she can give juice of bottle 1 or 2(any one) to mouse 2. Then,if the second mouse dies she can conclude that whichever juice she gave ( from bottle 1 or 2) is poisonous
..........OR if 2nd mouse does not die(by drinking juice either from 1st or second bottle..any one )then other alternate bottle (i.e. bottle 1 for bottle 2or bottle 2 if bottle 1 is used).
case 2)if mice 2 dies then it's one among 3,4 or 5.
case 3 ) if both of them die then bottle 3 is poisonous
case 4th) if no mice die then bottle 1,2,3,4,5,6 all are safe and aren't poisonous
hope it helps
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