Let A be the towns {P, Q, R, S}. Let B be the one way street relation {(P, S), (Q, P), (R, P), (S, Q), (S, R)}. Find B^2 (pairs of towns that are connected by two streets). Find B3 (pairs of towns...

Let A be the towns {P, Q, R, S}. Let B be the one way street relation {(P, S), (Q, P),

(R, P), (S, Q), (S, R)}. Find B^2 (pairs of towns that are connected by two streets). Find B3

(pairs of towns that are connected by three streets). You must use directed graph to find

the answer.