There are 1000 wine bottles. One of the bottles contains poisoned wine. A rat dies after one hour of drinking the poisoned wine. How many minimum rats are needed to figure out which bottle contains poison in hour?
Binary digit Concept
1000 can be written in 10 digit Binary Code so write binary code for each bottle
Like for bottle 8 code is 0000000100
Take 10 mouse and assign them each place (there are 10 place for each bottle)
For each Bottle if the place value is 1 then mouse will drink the wine else not
For example from bottle no 8 only mouse 3 will drink
After one hour, write the 10 digit binary on the basis of mouse life and its decimal conversion is the answer