What letter comes next in the series: z, x, v, t, ?

A. S

A can finish a work in 24 days, B can finish it in 18 days, and C can finish it in 12 days. If they work together, how long will they take to complete the work?

B. 6 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

Piano is to Music as Paintbrush is to ?

A. ART

Which of the following numbers is the odd one out?

C. 10

What is the sum of the roots of the quadratic equation x^2 - 5x + 6 = 0?

A. 5
Posted in:  Quadratic Equations -  Algebra -  Mathematics