You can put this solution on YOUR website! what is the probability of obtaining either 2 heads or 4 heads if a fair coin is tossed 5 times
------
P(2 heads) = 5C2/2^5 = 10/32
P(4 heads) = 5C4/2^5 = 5/32
-----
P(2 heads or 4 heads) = 15/32
----------------------------------
Cheers,
Stan H.
----------------