If Q gets fewer coins than R, then which one of the following is not necessarily true?
P and Q together get at least four coins.
Q and S together get at least four coins
R and S together get at least five coins
P and R together get at least five coins
(a) Possible combinations are
P < Q < S < R; and P < S < Q < R.
Two coins tossed together. What is the probability of getting at least one head?