Calculate the following probabilities if two unbiased dice are tossed: 

(a) The probability of a 3 on the first die and 5 on the second die = P(3, 5); 

(b) The probability of a 3 on the first die and 5 on the second die = P(3 and 5);  

(c) The probability of a 3 on the first die or 5 on the second die = P(3 or 5).