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For the quadratic equation 2x² - 4x + k = 0 to have real roots, what must be the condition on k?

C. K ? 8
Posted in:  Quadratic Equations -  Algebra -  Mathematics

If a person walks at a speed of 5 km/h, how long will it take to walk 15 kilometers?

B. 3 HOURS
Posted in:  Time, Distance and Speed -  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

If a train travels at a speed of 90 km/h, how long will it take to cover a distance of 270 km?

B. 3 HOURS
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If A can do a piece of work in 15 days and B can do it in 10 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