Posted by Denis Borris on September 23, 2002 at 16:10:12:
In Reply to: Coin toss posted by Brett on September 23, 2002 at 11:36:25:
: If you toss a fair coin ten times, what is the probability of getting exactly eight
: heads? What is the probability of getting at least eight heads.
HINT: 1=head, 2=tail
Get all 10 digit numbers : 1111111111, 1111111112 .... 1222222222, 2222222222.
How many contain 2 tails and 8 heads?
How many contain over 7 heads?
Heads I win, tails you lose...
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