in lottery , there are 10 prizes and 25 blanks . a lottery is drawn at random . what is the probability of getting a prize ?
total number of outcomes possible , n ( s ) = 10 + 25 = 35 . total number of prize , n ( e ) = 10 p ( e ) = n ( e ) / n ( s ) = 10 / 35 = 2 / 7 answer is option b
divide(10, add(10, 25))