This weekend you have to help Chandler to select the best horses. Chandler loves horses and he doesn't want to invest his money in bad horses.
Chandler wanted to buy 3 horse for the upcoming race he wanted to participate. He went to a horse ranch. He found 25 promising horses but he could only buy 3. So he decided to conduct a race among them and select 3 fastest horses.
As he was going to start the competition he realized he did not have any stopwatch with him. And the race track only has 5 tracks that means only 5 horses can in one competition. It is known that horses run at same speed in all competition.
Chandler was confused could not decide a strategy to find out 3 fastest horses with minimum number of competitions.
Can you guess the minimum number of competition chandler need to find out the 3 fastest horses?