Quantitative Aptitude - Arithmetic Ability Questions

A sum fetched a total simple interest of Rs. 9648 at the rate of 12% per year in 6 years. What is the sum?

Akshar remembers that the match is after 26th April but before 30th April, while Suresh remembers that the match is after 22nd April but before 28th April. On which date of April is the match?

If x +y = √3 and x - y = √2, then the value of 8xy (x2 + y2) is

The zeros of the cubic polynomial 2x3-x2-2x+1 are a, b and c respectively. Find a+b+c :

What is the value of cot 5π/3?

For what value of k, the expression x6– 18x3 + k will be a perfect square?

If a+b=5 and a­b=3, then the value of (a2+b2) is

80 litre mixture of milk and water contains 10% milk. How much milk (in litres) must be added to make water percentage in the mixture as 80%?