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

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

In every hour, a cyclist covered 1 km more distance than he was to cover with his original speed on $1×1/4$ hour.
So he covered 96 km distance early by 2 hours.
The original speed of cyclist (km/hr) is 

A. 12
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

Some machines complete the work in 4 days. But if 4 other machines are included in this work, then the job shall be completed in 2 days. If capacities of all machines are same, then in how many days 2 machines can complete this work ?

B. 8 DAYS
Posted in:  Time & Work -  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