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【Visit】Here’s a simple question to test everyone

2016-03-29View Original

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There was a racetrack with only five racing tracks, 25 horses to determine the top three, and no timers or other auxiliary equipment. How many races were needed at minimum? There’s a reward for getting it right; it would be great if you could explain the answer as well
Reply #22016-03-29
6 times. 5 horses per batch; the ones that win the first prize advance to the finals, and again, there are 5 horses. 1 time. Just those three; to make the others outperform them, they’re not given any fodder or water for 3 days and are kept confined. . .
Reply #32016-03-29
That’s not right. What if one group’s last place runner is faster than the other group’s first place runner?
Reply #42016-03-29
5 minus 3 equals 2; that whole group has been eliminated, so what’s there to worry about? Where does so much fairness come from? The race between Tian Ji and his opponents?
Reply #52016-03-29
One match for every 5 horses; the top two in the first round compete in two matches, and the top two again in another match, for a total of 8 matches
Reply #62016-03-29
7 times, first divide into 5 groups and play 5 matches. Take the first match of each group once to determine the top three, A, B, and C, with A definitely being first place. The top 2 and 3 from Group A drop down, the second-place contestant from Group B joins them, and Group B and C compete again to determine the 2nd and 3rd places.
Reply #72016-03-29
This question isn’t easy; there’s no timer – buy incense!
Reply #82016-03-29
There are too many; it’s not necessary to have that many sessions

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