Alec attended his town's annual Worm Charming Competition. Contestants are assigned to a square foot of land, where they have 30 minutes to "charm" worms to the surface of the dirt using a single technique. Alec observed contestants' charming techniques, and kept track of how many worms surfaced. Tapping the ground Raking the ground 5-10 worms 5 11-20 8 worms 21-30 10 4 worms What is the probability that a randomly selected contestant charmed 11-20 worms or 5-10 worms?

find the probability of randomly selecting a student who spent the money, given that the student was given a $1 bill.     purchased gum kept the money  students given 4 quarters  25 11 students given $1 bill  15 34

Haroldo, Xerxes, Regina, Shaindel, Murray, and Georgia  are invited to a dinner party.  They arrive in a random order and all arrive at different times.  What is the probability that Xeres arrives first AND Regina arrives last? Answer in decimal form.  Round to 3 decimal places as needed.

Calculate the probability of winning: Roll two standard dice. You win if you get a sum of 4 or get a sum of 8.