What did the Vikings believe was necessary for a soul to move on to the afterlife?

What was the purpose of placing personal items in the tombs of ancient Egyptians?

Why were trees planted on Chinese 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]. 

What items were commonly found in Christian graves?

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

Which cultural practice emphasized painted furniture and symbolic grave goods?

Suppose there are  [n] devices in parallel. The probability that each device works is p=[p]. What is the probability of success overall?

Which cultural practice emphasized painted furniture and symbolic grave goods?

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].