tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random . what is the probability taht the ticket drawn has a number which is a multiple of 3 or 5 ?
"solution here s = ( 1 , 2,3 , 4,5 , . . . , 19,20 ) . let e = event of getting a multiple of 3 or 5 = ( 3 , 6,9 , 12,15 , 18,5 , 10,20 ) p ( e ) = n ( e ) / n ( s ) = 9 / 20 . answer d"
divide(3, const_10)