300-7[4(3+5)]3•3 does the bracket mean you divide I can’t remember I know you would use pemdas

What describes horizontal cross section of the right rectangle 6m 8m 5m

Which one is true about the hexagons ?

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?