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There is a deck of [n] cards. You are drawing [k] cards from the deck of [n] cards, and laying them down in front of you one-by-one. How many ways can you do this if the order of the cards in front of you does matter? 

Later Etruscan tombs resembled:

Consider a pair of random variables X and Y, each of which take on values on the set A={1,2,…,[n]}. The joint distribution of X and Y is a constant for all (x,y) pairs coming from the set A above. Let the random variable Z be given as the maximum of X and Y.  Find the probability that Z is less than or equal to [k].  

What was the original purpose of coins placed on the eyes of the deceased?

What were early Etruscan graves typically shaped like?

Take a look at the probability density function of the random variable X given as below:   What is the probability

Which period in Egypt saw the use of mastabas as tomb structures?

Which symbol was frequently used to mark Christian graves?

Suppose you roll a pair of  4-sided fair dice. The first roll is F, the second roll is S, and the sum total is X. Find the probability  P[F=2|X=4]. 

Consider the joint PDF: Find the probability