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View Full Version : A cuteish real problem


01-26-2002, 11:34 AM
Suppose one starts flipping a fair coin. On average how long does it take to flip a head?


Consider this part a to a question which we will see has interesting ramafications..


Showing clever work gets extra credit(-:

01-26-2002, 12:42 PM
.623 seconds.

01-26-2002, 12:54 PM
How high are the flips? And are we assuming planet earth at sea level?


Okay, here's one. What is Aibohphobia the fear of?


Tommy

01-26-2002, 05:16 PM
a man, a plan, a canal, Panama. Scary.

01-26-2002, 05:26 PM
Fear of having to do kickboxing aerobics.

01-26-2002, 05:57 PM
"What is Aibohphobia the fear of?"


the fear of questions about flipping coins?

01-26-2002, 07:22 PM
my thinking is that the answer would be

the sum (1/2 + 2/4 + 3/8 + 4/16 + 5/32 + 6/64 ......)= avg number of flips to get a head

01-26-2002, 07:47 PM
That's what I got too. I'm guessing that it converges on 2.

01-26-2002, 10:31 PM
I'll give you a hint:


Average flips to get heads = Average flips to get tails.

01-27-2002, 05:25 AM
2d

01-28-2002, 05:37 PM