Quantitative Aptitude - Arithmetic Ability Questions

If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?

A kite is flying in the sky. The length of string between a point on the ground and kite is 420 m. The angle of elevation of string with the ground is 30 deg. Assuming that there is no slack in the string, then what is the height (in metres) of the kite?

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?

If cos 21° = x/y, then cosec 21° -­ cos 69° is equal to

If sin(A/2) = x, then the value of x is

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

If √(1 - cos2A) = x, then the value of x is

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?