Desiree had 35 stickers. she gave each of 3 friends the same number of stickers. she now has 20 stickers left. she then gives the same number of stickers to each of another 5 friends. how many stickers to each of another 5 friends. how many stickers did she give each of her 3 friends? each of her 5 friendship?

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.