Which of the following is a rational expression?

C. 1/(X - 3)

What is the least common multiple (LCM) of 12 and 18?

A. 36
Posted in:  Numbers -  Arithmetic -  Mathematics

Which of the following numbers is a perfect square?

B. 64
Posted in:  Numbers -  Arithmetic -  Mathematics

A can complete a work in 10 days, while B can complete the same work in 15 days. How long will it take for both A and B to complete the work together?

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

If the equations 3x + 4y = 12 and 6x + 8y = 24 are solved simultaneously, what can be concluded about their solutions?

C. THEY HAVE INFINITELY MANY SOLUTIONS.
Posted in:  Linear Equations -  Algebra -  Mathematics