it doesnt state which prize will be won or lost therefore the probability is win, lose or lose win
P(W,W)= 5/30 x 4/29
P(W,L)= 5/30 x 25/29
P(L,W)= 25/30 x 4/29
P(L,L)= 25/30 x 25/29
therefore probability of winning at least ONE is
P(W,L) + P(L,W)
= (5/30 x 25/29) + (25/30 x 4/29)
=...