for the first 6 tosses, the chances of getting all heads are .5**6.
But if you get 20 tosses, that's fourteen more tries at getting all six in a
row.  So that would be 14 * .5**6, or is it 15 * .5**6 ?

Tracy Pierce, GGB
> -----Original Message-----
> From: VANCE,JEFF (HP-Cupertino,ex1) [mailto:[log in to unmask]]
> Sent: Tuesday, February 29, 2000 1:17 PM
> To: [log in to unmask]
> Subject: OT: Probability question
>
>
> Hi all,
>
> (This is way off topic so please delete it now if you are not
> interested)
>
> My wife just took a biology test where one of the questions was:
>    "What is the probability of tossing 6 heads in a row out of 20 coin
> tosses?"
>
> I believe that the number of tosses (20) doesn't matter.
>
> Thanks,
> Jeff
>