Quantitative Aptitude - Arithmetic Ability Questions

D and E are the points on the sides AB and AC respectively of a ΔABC and AD = 8 cm, DB = 12 cm, AE= 6 cm and EC = 9 cm, then BC is equal to:

ax + 5y = 8 has slope of -4/3. What is the value of a?

Simplify 81x2 - 49y29x + 7y

Select the odd letters from the given alternatives.

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

In a mixture of 45 litres, the ratio of liquid A and liquid B is 7 : 2. If 11 litres of liquid B is added to the mixture, then what will be the ratio of liquid A and liquid B in the new mixture?

How many natural numbers between 15 and 85 are divisible by 7?

Volume of a cube is 512 cubic cm, find its total surface area? (Take π = 22/7)