A big box can hold 12 marbles and a small box can hold 5 marbles. There are a total of 99 marbles. How many big boxes are there?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?

What is the value of x? enter your answer in the box.