Question

what is the meaning of atmost two heads in probability ?

Answer 1

atmost two heads means...

you can have these three cases combined > > NO HEAD, ONLY ONE HEAD, or TWO HEADS ... 

hope it helped

Answer 2

The probability of getting one head, for example, means that you got one head first, one head second, or one head third. ... I believe there is a 50% chance of getting a toss of more then 1 head in 3 tosses. If you look at a chart you will see that the possible outcomes are HHH, HHT, HTH, HTT, THH, THT, TTH and TTT.