what is the probability of drawing a ` ` queen ' ' from a deck of 52 cards ?
"explanation : total number of cards , n ( s ) = 52 total number of ` ` queen ' ' cards , n ( e ) = 4 p ( e ) = n ( e ) / n ( s ) = 4 / 52 = 1 / 13 answer : b"
divide(const_2, choose(add(const_3, const_3), const_3))