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If (x2 + 1/x2) = 102, then (x - 1/x) is :

B. 10
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

A certain number of men do a piece of work in 40 days. If there has been 45 men more, the work could have been finished in 25 days. The original number of men employed at the work were

A. 75
Posted in:  Time & Work -  Aptitude -  Mathematics

X and Y together complete a work in 8 hours. If X alone can complete it in 12 hours than Y alone can complete it in

A. 24 HOURS
Posted in:  Time & Work -  Aptitude -  Mathematics

Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph.
For how many minutes does the bus stop per hour ?

C. 10
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

Value of k foe which (x - 1) is a factor of (x3 - k) is :

B. 1
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics