Asked by Jenny
What are the odds against getting all heads or all tails in three successive flips of a coin?
I say it is 3:1, is this right?
I say it is 3:1, is this right?
Answers
Answered by
bobpursley
I don't think so. Lets look at it.
There are 2^3=8 things that can happen when you flip three coins.
Two of those HHH,or TTT is heads or tails.
so in 8 tries, one expects 2 heads/tails.
So in 8 trials, six are not heats or tails.
6:2 is the odds, and geepers, you are exactly right. Go to the head of the class.
There are 2^3=8 things that can happen when you flip three coins.
Two of those HHH,or TTT is heads or tails.
so in 8 tries, one expects 2 heads/tails.
So in 8 trials, six are not heats or tails.
6:2 is the odds, and geepers, you are exactly right. Go to the head of the class.
Answered by
joe
some of the worst math I've ever seen