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If 2x + 3y = 5 and x = - 2, then the value of y is:

C. 3
Posted in:  Linear Equations -  Algebra -  Mathematics

If a + b + c = 0, then (a3 + b3 + c3) is equal to :

C. 3 ABC
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

Find the unit's digit in the product
(2467)163 x (341)72.

E. 7
Posted in:  Numbers -  Arithmetic -  Mathematics

A and B can do a piece of work in 10 days and 15 days respectively. A alone starts the work. Then, 5 days after he is joined by B. In how many days, work will be completed ?

B. 8
Posted in:  Time & Work -  Aptitude -  Mathematics

If (x + 1/x) = 4, then (x4 + 1/x4) is equal to :

B. 194
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics