# [SOLVED] Need Help

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• March 6th 2006, 07:44 AM
drepaid
[SOLVED] Need Help
Heres the problem: A coin is tossed 50 times. What is the probability that you will get all heads everytime.
• March 6th 2006, 07:53 AM
CaptainBlack
Quote:

Originally Posted by drepaid
Heres the problem: A coin is tossed 50 times. What is the probability that you will get all heads everytime.

Assume its a fair coin, then

$
\mbox{ P(50 heads in 50 threows)}=0.5^{50}\approx 9 \times 10^{-16}
$

RonL
• March 6th 2006, 02:49 PM
ThePerfectHacker
Quote:

Originally Posted by drepaid
Heres the problem: A coin is tossed 50 times. What is the probability that you will get all heads everytime.

The exact answer in fractional form is,
$\frac{1}{1125899906842624}$