Quantitative Aptitude - Arithmetic Ability Questions

In an exam, the avarage marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies and Craft were 70. If the average marks in all seven subjects is 58, his score in maths was

If a + b = 1 and ab = -6, then what is the value of a3+ b3?

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

Select the odd word/letters/number/number pair from the given alternatives.

If sec (4x - 50°) = cosec(50° - x), Then the value of x is

If sum of the roots of a quadratic equation is ­-7 and product of the roots is 12. Find the quadratic equation.

The value of -261+(-380)-(-521)+821-(-121)

A dealer allows a discount of 15%. A customer pays an amount of Rs. 318.75 for an article. At what price is the article listed?