Astring of holiday lights contain 20 bulbs. the bulbs are wired in series, so that if any bulb fails, the whole string will go dark. each light has probability 0.02 of failing during the holiday season. the lights fail independently of each other. what is the probability that the string lights will remain bright?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

What is negative 3/9 times negative 2/8 ?