Asked by unowen
There are 10 coins, 5 of which are heads up and 5 of which are tails up.
On each turn, you choose exactly 3 coins and flip them over.
What is the minimum number of turns needed to make all of the coins heads up?
On each turn, you choose exactly 3 coins and flip them over.
What is the minimum number of turns needed to make all of the coins heads up?
Answers
Answered by
Steve
Looks like 3 to me:
HHHHHTTTTT
HHHHHHHHTT
HHHHHHTTHT
HHHHHHHHHH
HHHHHTTTTT
HHHHHHHHTT
HHHHHHTTHT
HHHHHHHHHH
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.