Quantitative Aptitude - Arithmetic Ability Questions

If α + β = 90° and α:β = 2:1, then the ratio of cosα to cosβ is

If a - b = 2 and ab = 8, then what is the value of a3 - b3?

What is the value of Tan 45° + 4/√3 Sec 60°?

The cash difference between the selling price of an article at a profit of 2% and 18% is Rs. 3. The ratio of two selling prices is

The sum of a number and 4 times its reciprocal is 5. What is the number?

A bank offers 20% compound interest per half year. A customer deposits Rs 6000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is

Select the odd letters from the given alternatives.

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