kindly solve it perfectly

7) ( In a dice game, a player rolls 6 fair standard six sided dice. The player gets some points for all of the following: a) Three or more (of a kind, so three or more 4's for example) b) Three pairs (so two 3s, two 4s and two 6s for example) c) All six distinct numbers (so in any order 1, 2, 3, 4, 5, 6) d) Rolling the number 1 or the number 5 What is the probability, when rolling the six dice, that a player gets no points