Quantitative Aptitude - Arithmetic Ability Questions

If a+b=2c then the value of aa-c+cb-c is equal to (where a≠b≠c)

Value of (cos 53° - sin 37°) is

If a + b = ­ 8 and a2 + b2 = 34, then value of ab is

A train travels 40% faster than a car. Both start from point A at the same time and reach point B, 140 km away at the same time. On the way the train takes 25 minutes for stopping at the stations. What is the speed (in km/hr) of the train?

The difference between compound interest compoundedevery 6 months and simple interest after 2 years is 248.10.The rate of interest is 10 percent. Find the sum

If the product of two numbers is 3026 and their LCM is 89, then their HCF is :

What smallest number should be added to 2401 so that the sum is completely divisible by 14 ?

A vendor buys apples at the rate of 21 for Rs 7 and sells at the rate of 5 for Rs 2. What will be the result?