Two pedestrians begin to walk toward each other at dawn, each walking at a constant speed. They meet at noon, and continue along their separate routes. The pedestrian walking from point A to point B reaches point B at 4:00 pm, and the pedestrian walking from point B to point A reaches point A at 9:00 pm. At what time was dawn?

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)