text: probability of an event is given by the formula \np=x/s, where x is the set of all the values, which result in a success and s is the set of all possible values, called the sample set\nnow here, a die has numbers from 1 to 6. so, the sample space is 6.\nthe number should be greater than 3 and even. first of all, the numbers greater than 3 on a die are 4,5 and 6. but the even numbers among these are only 4 and 6. so, x is 2\nnow probability is x/s=2/6 or when simplified, it is 1/3.