Mathematics Multiple Choice questions

If (x² + ¹/_x²) = 102, then (x - ¹/x)_{is :}

A. 8

B. 10

C. 12

D. 13

E. None of the above

View Answer View Explanation

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

B. 16 hours

C. 12 hours

D. 8 hours

E. None of the above

View Answer View Explanation

A. 24 HOURS

Posted in: Time & Work - 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 ?

A. 6 days

B. 8 days

C. 10 days

D. 12 days

E. None of the above

View Answer View Explanation

B. 8 DAYS

Posted in: Time & Work - Aptitude - Mathematics

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

A. -1

B. 1

C. 8

D. -8

E. None of the above

View Answer View Explanation

B. 1

Posted in: Basic Operations & Factorization - Algebra - Mathematics

If α and β are the roots of the equation
$x^2 - 9x + 8 = 0$ (α > β) then find the value of
$α^2 - β^2$.

A. 63

B. 62

C. 65

D. None

E. None of the above

View Answer View Explanation

C. 65

Posted in: Quadratic Equations - Algebra - Mathematics

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

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

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 ?

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

If α and β are the roots of the equation$x^2 - 9x + 8 = 0$ (α > β) then find the value of$α^2 - β^2$.

If (x² + ¹/_x²) = 102, then (x - ¹/x)_{is :}

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

If α and β are the roots of the equation
$x^2 - 9x + 8 = 0$ (α > β) then find the value of
$α^2 - β^2$.