What is the sum of 456 and 789?

A. 1245
Posted in:  Numbers -  Arithmetic -  Mathematics

Which of the following numbers is a prime number?

B. 23
Posted in:  Numbers -  Arithmetic -  Mathematics

A car travels 150 kilometers in 2 hours. What is its average speed?

B. 75 KM/H

What is the difference between 1000 and 678?

A. 322
Posted in:  Numbers -  Arithmetic -  Mathematics

What is the L.C.M. of the polynomials x^2 - 1 and x^2 - 4?

A. (X - 1)(X + 1)(X - 2)(X + 2)