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If (x - 1/x) = 1/2 , then (4x2 + 4/x2) is equal to :

C. 9
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

If a person works all the 30 days of a month, he gets Rs. 42 per day and for taking leave he is fined Rs. 2 per dya. If he got Rs. 952 in the month, then the number of days he did not work was.

D. 7
Posted in:  Time & Work -  Aptitude -  Mathematics

If $x + y = 7$ and xy = 12,
the value of $(x^2 + y^2)$ is :

A. 25
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

21 labourers can build a wall in 25 days. If 14 additional labourers are employed, then in how many days the work can be completed ?

D. 15 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

One of the factors of 3x3 + x2 - 12x - 4 is :

D. 3X + 1
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics