Interested to Buy Any Domain ? << Click Here >> for more details...
There are 20 bottles, one is poisoned. If a person take a sip of that poisoned bottle, he will die in next 10 hrs. A doctor is ready to check which is poisoned among 20 with the help of mice in 16 hrs. How many minimum number of mice he needed?
- 5 Answers
- 10773 Views
- Zoho, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / preethi sundararajan
Give a little amount of drink from each bottle with a time gap of some minutes and notice the time.
Start calculating time if death starts, so that the poisoned bottle can be found.
i.e.,
At 1st min the mouse tastes 1st bottle, if it is poisoned then it dies at 10 hr 1 min.
After 15 mins the mouse tastes 2nd bottle, if it is poisoned then it dies at 10 hr 15 min
After 30 minutes the mouse tastes 3rd bottle, if it is poisoned then it dies at 10 hr 30 min
Proceeding like this,
After 4 hrs 30 mins the mouse tastes 19th bottle, if it is poisoned then it dies at 14 hrs 30 min
If the mouse is still alive after 14 hrs 30 min, then the poison will be in the 20th bottle.
Hence the answer is 1.
| Is This Answer Correct ? | 5 Yes | 0 No |
if the time of death is approximated in hours..........3 mice will be enough to get deducted in 16 hrs
if the time of death is approximated in minutes.......1 mice will be enough to get deducted in 10 hrs 20 minutes
if the time of death is approximated in seconds......1 mice will be enough to get deducted in 10 hrs 00 minutes 20 seconds
if the time of death is approximated in milliseconds..1 mice will be enough to get deducted in 10 hrs 00 minutes 00 seconds 20 milliseconds
if the time of death is approximated in microsecond which is not possible by medical criteria that the person will die accurately when the time 10 hrs 00 minutes 00 seconds 00 milliseconds and 20 microseconds elapses. even though if theoritically possible wil also use 1 mice to get deducted.
Else if anyone is willing to say hypothetical question could also be the answer......
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / achudan ts
The answer is 5.
Cannot explain without a table.
Little digital logic truth table is used.
With 5 rats you can check from 17 to 32 bottles.
2^4 <= 20 > 2^5. Therefore answer is 5.
| Is This Answer Correct ? | 0 Yes | 0 No |
A remote island contains a tribe whose members have either blue or brown eyes. Tribe members do not know the color of their eyes and if they learn it, they must kill themselves the same night. Every member of the tribe always behaves logically...
2 Answers ABC, Amazon, Microsoft,
A lady has fine gloves and hats in her closet- 18 blue, 32 red, and 25 yellow. The lights are out and it is totally dark. In spite of the darkness, she can make out the difference between a hat and a glove. She takes out an item out of the closet only if she is sure that if it is a glove. How many gloves must she take out to make sure she has a pair of each color?
Two identical pack of cards A and B are shuffled throughly. One card is picked from A and shuffled with B. The top card from pack A is turned up. If this is the Queen of Hearts, what are the chances that the top card in B will be the King of Hearts?
1) You have 8 coins. 3 of them weigh x units, 3 y units, 1 a units and 1 b units. They are all mixed and look identical. You have to find the lightest coin in minimum number of weighing .
9 Answers Bhel, Mechanical, Microsoft, Oracle,
Substitute digits for the letters to make the following addition problem true. W H O S E T E E T H A R E + A S ------------------- S W O R D S Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter H, no other letter can be 3 and all other H in the puzzle must be 3.
suppose you build a tower interlocking cubes that is 99 cubes high. And suppose you have to paint each square on the tower. How many squares would you have to paint?
A, B and C are three points on a straight line, not necessarily equidistant with B being between A and C. Three semicircles are drawn on the same side of the line with AB, BC and AC as the diameters. BD is perpendicular to the line ABC, and D lies on the semicircle AC. If the funny shaped diagram between the three semicircles has an area of 1000 square cms, find the length of BD.
On 20 feet high pol a monkey climb/jump 4 feet and every time he fel/slip down 3 feet then, how many jump/climb he reach at top of the pol?
16 Answers Delhi Police, Ellar Infotech, LIC, Syntel,
do you have reference list?
How many possible combinations are there in a 3x3x3 rubics cube? In other words, if you wanted to solve the rubics cube by trying different combinations, how many might it take you (worst case senerio)? How many for a 4x4x4 cube?
if 1+1 = 2 what will be 1-1 ? if 1+1 = 11 what will be 1-1 ? if 1+1 = 1 what will be 1-1 ?
1. at the recent web developers bowling match, two games weree played. kiev beat stuart in both games; also richard beat john in both games. The winner in game 1 came second in game 2. richard won game 2 and john beat stuart in game1. no player got the saame placing twice. can you determine who finished where in each game?
English 
