The 10-point question in the Warm-up round of male student Duy Quan is as follows: "In a family photo, there are 2 fathers and 2 children. How many people are there in the photo at least?"
After thinking, Duy Quan could not find an answer.

Simple question 'knocks out' contestant of Road to Olympia.
If you find the answer to this problem, scroll down to the comments to post it and see how many people think the same as you.
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