Mark the correct alternative in the following:

A coin is tossed 4 times. The probability that at least one head turns up, is


Given:


n=4


p(getting atleast one head)=?


• 0 head : HHHH


• 1 head : HTTT


THTT


TTHT


TTTH


• 2 heads :HHTT


HTHT


HTTH


THHT


THTH


TTHH


• 3 heads: HHHT


HHTH


HTHH


THHH


• 4 heads : HHHH


Total ouctomes = 16


Outcomes containing atleast 1 head = 15


P(getting atleast 1 head)=

1