Quantitative Aptitude - Arithmetic Ability Questions

If two successive discounts of 50% and 10% are offered, then what is the net discount (in %)?

If ( x - 5)2 + (y - 2)2 + (z - 9)2 = 0, then value of (x + y - z) is

If the angle of elevation of the sun decreases from 45° to 30°, then the length of the shadow of a pillar increases by 60m. The height of the pillar is

Four pairs of words are given. Find the odd one out.

What is the reflection of the point (3,-5) in the origin?

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

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?

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