note aitap Well, actual probability of getting 5 heads and 5 tails is <c>C(10,5)*p(head)^5*p(tail)^5 = (10!)/(5!*5!)*(0.5^5)*(0.5^5) = 0.24609375</c>, so you probably won't always get this result.<br/> (See [wikipedia://Bernoulli trial] for more information) <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-980564"> Sorry if my advice was wrong. </div></div> 1005043 1005043