what is the probability of getting atmost one head when two unbiased coin are tossed ?
"here s = { hh , ht , th , tt } let ee = event of getting one head e = { tt , ht , th } p ( e ) = n ( e ) / n ( s ) = 3 / 4 option a"
divide(const_2, choose(add(const_3, const_3), const_3))