For the king's revelry 30 barrels of beer have b een ordered . howerver, it was found that one of them is

poisoned. The poison takes effect even if consumed in the tiniest amount after 14 hours. Yhou need to find

within 24 hours the poisoned barrel and have at your disposal some beer guzzling mice. The smallest number of

mice required to find the poisoned barrel is
1) 2
2) 1
3) 4
4) 3

• 1 mice & 14hrs 28mins are enough to get the result...
  At 1st min the mice tastes 1st can & dies at 14hr
  At 2nd min the mice tastes 2nd can & dies at 14hr.1Min
  At 3rd min the mice tastes 3rd can & dies at 14hr.2Min
  .
  .
  .
  At 29th min the mice tastes 29th can & dies at 14hr.28Min
  If the mice is till alive after 14hr.28Min then the poison will be in the 30th Can....
  
  So no death and result achieved in the last case...
  
• 10 years agoHelpfull: Yes(20) No(11)
• solution:ans=5
  this is the easiest way to solve these type of questions.
  2^n> no of barrels==>2^5=32>30
  so 5 mice is required.
• 10 years agoHelpfull: Yes(12) No(0)
• ans is 1 mice..give 1st beer to the mice suppose at 12 a.m..it will show effect at 2p.m..give 2nd beer bottle to the same mice suppose at 12.15 a.m..it will show effect at 2.15p.m..and so on repeat the procedure for same mice..we have (24-14)=10 hrs..so within 1 hr we can test 4 bottles..hence 10*4=40 bottles..so minimum no. of mice required is 1
• 10 years agoHelpfull: Yes(5) No(0)
• 3 mice
  mice shows effect after 14 hours. we just have 24 hours. so 24-14 =10 is the no. of results from one mice .
  we need 30 results. so
  3 mice are required(at least)
• 10 years agoHelpfull: Yes(4) No(9)
• Isn't it that this question can have multiple answers depending on what rate the mice consume/taste?
• 10 years agoHelpfull: Yes(0) No(0)