Posted by **crystal** on Friday, January 14, 2011 at 4:55pm.

Robert says that if you toss three coins you get 3 H (3 Heads),2 H ( 2 heads), 1 H(1 Head), or oH(o Heads), so the probabliity of getting three heads is 1/4. How do you respond?

- Geometry -
**Reiny**, Friday, January 14, 2011 at 5:00pm
I would respond with

"Robert, you are wrong, the probability is 1/8"

- Geometry -
**drwls**, Friday, January 14, 2011 at 5:04pm
Robert is wrong. The four possible outcomes are not equally likely.

The probability of getting either zero or three heads in three tosses is 1/8 (for each).

The probability of getting either one or two heads is 3/8 (for each)

What does this have to do with geometry?

- Geometry -
**crystal**, Friday, January 14, 2011 at 5:08pm
your guess is as goods as mine.

- Geometry -
**crystal**, Friday, January 14, 2011 at 5:14pm
I think it has more to do with probablity

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