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If the roots of the quadratic equation x^2 - 4x + k = 0 are 2 and 2, what is the value of k?

B. 4
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

A car travels 150 km in 3 hours. What is its average speed?

B. 60 KM/H
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

A cyclist covers a distance of 120 km in 4 hours. What is the speed of the cyclist in km/h?

B. 30 KM/H
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If A can do a piece of work in 12 days and B can do it in 18 days, how long will it take for both A and B to complete the work together?

A. 7.2 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