分享一道好玩的智力题，回去可以和娃一起试一下# Parenting - 为人父母
g*o
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同事昨天跟我说了个好玩的题，她女儿13岁，回来跟她讲的。挺有意思，跟大家分享一
下。大家想想看，是有数学答案的。看过这道题的，先不要说出答案哦～～
You're in a completely black room. Scattered on the floor are 100 coins - 90
of these are heads up and 10 of these are tails up. You are unable to
distinguish which coins are heads or tails by touching them.
How do you separate the 100 coins into 2 piles, so that both piles contain
the same number of face up tails?
下。大家想想看，是有数学答案的。看过这道题的，先不要说出答案哦～～
You're in a completely black room. Scattered on the floor are 100 coins - 90
of these are heads up and 10 of these are tails up. You are unable to
distinguish which coins are heads or tails by touching them.
How do you separate the 100 coins into 2 piles, so that both piles contain
the same number of face up tails?
