(xv) Total number of aces of spade is $1$
As We know that Probability = Number of favorable outcomes/ Total number of outcomes
Therefore, the probability of getting an ace of spade $=1/52$
(xvi) Total number of queens is $4$
As We know that, Probability = Number of favorable outcomes/ Total number of outcomes
Therefore, the probability of getting a queen $=4/52=1/13$