when fair coin is tossed 9 times find the probability of getting head at least once.	Choose the correct choice from the following answers:	A) 1/512	B) 511/512	C) 9/512	D) 503/51	E) 503/510
1-1/2^9= 1-1/512 = 511/512   ANSWER:511/512
<result>B</result>
when fair coin is tossed 9 times find the probability of getting head at least once.