Prove: Among any [latex]n + 1[/latex] numbers chosen from [latex]1[/latex] to [latex]2n[/latex], at least one pair adds up to [latex]2n + 1[/latex].
Let A = {1, 2, 3, 4, 6}. Define relation R on A:aRb Represent as a matrix, draw the digraph.Let . Define relation on :Represent as a matrix, draw the digraph.
State the Pigeonhole Principle. Prove: Among 29 people, at least 5 share a birthday on the same weekday.