Barry put all of the tiles shown below into a bag, then randomly pulled out one round one and one square one. What is the probability that Barry drew two red tiles? Round tile: 21 blue, 5 green, 7 yellow, 3 red. Square tiles: 12 blue, 14 yellow, 9 red, 6 purple, 3 brown, 4 white, 12 green. a. 9/1,024 b. 1/15 c. 1/80 d. 3/80

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?