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If the roots of the quadratic equation 2x² + 3x + k = 0 are real and equal, what is the value of k?

A. -4.5
Posted in:  Quadratic Equations -  Algebra -  Mathematics

A can do a piece of work in 20 days, B can do it in 30 days. If they work together for 10 days, how much of the work is left?

A. 1/3
Posted in:  Time & Work -  Aptitude -  Mathematics

If a work can be done by 4 men in 10 days, how many men are required to complete the same work in 5 days?

B. 8 MEN
Posted in:  Time & Work -  Aptitude -  Mathematics

A can complete a work in 12 days, while B can complete the same work in 18 days. How long will they take to complete the work together?

B. 8 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

What is the H.C.F. of the polynomials 2x^2 + 4x and 4x^2 + 8x?

A. 2X
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics