from a pack of 52 cards , two cards are drawn at random together at random what is the probability of both the cards being kings ?
"let s be the sample space then n ( s ) = 52 c 2 = ( 52 * 51 ) / ( 2 * 1 ) = 1326 let e be the event of getting 2 kings out of 4 n ( e ) = 4 c 2 = ( 4 * 3 ) / ( 2 * 1 ) = 6 p ( e ) = n ( e ) / n ( s ) = 6 / 1326 = 1 / 221 answer ( a )"
divide(multiply(divide(52, const_4), divide(52, const_4)), choose(52, const_2))