Quantitative Aptitude - Arithmetic Ability Questions

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

 In the following question, select the odd letter/letters from the given alternatives.

Find the total surface area (in cm2 ) of a hemisphere of diameter 42 cm.

The diagonals do not form at least two congruent triangles in a _____.

The base of a prism is in the shape of an equilateral triangle. If the perimeter of the base is 18 cm and the height of the prism is 20 cm, then what is the volume (in cm3) of the prism?

A mixture contains acid and water in the ratio of 7 : 3. If 4 litres of water is added to it, then the ratio of acid and water becomes 7 : 4. What is the quantity (in litres) of acid in the mixture?

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?