# Interesting Question of the Day – 26 October 2018

You have 25 horses and you need to find the fastest three.

They always run at the same pace, you don’t have a stopwatch, and you can race up to five horses at a time.

What is the least number of races you need to run to find the three fastest.

The first new player to comment on the website with the correct answer wins a free drink at their next iQ Trivia show.

I get 11.

Run a random five.

Take the top three horses from that race, then race those against another two randoms from the remaining twenty. Repeat until all horses have raced.

You can do it in less. Quite a few less actually.

It’s all about structuring it so that you can eliminate horses based on what you know from races you’ve already run.