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25 horses 5 track Puzzle
There are 25 horses out of which you need to find the fastest 3 horses. The race ground consists of 5 tracks that mean you can run only 5 horses at a time. If you don't have a stopwatch. What is the minimum number of races required to find the fastest 3 horses?
Explanation :
No Best Answer on this question yet!Asked In : Accenture
There should be minimum 11 races required.
Firstly divide 25 horses in groups of 5 and have 5 races. From every race get the fastest 3.
This way from 5 races you will get 15 fast horses.
Now again conduct 3 more races to select the fastest 3 horses from those three races. Hence u will get 9 horses.
Again conduct 3 races with only 3 horses at a time and choose the fastest one hence u will get 3 fastest horses.
