Quantitative Aptitude - Arithmetic Ability Questions

If cosA + cos2A = 1 then the value of sin2A + sin4A is

A can complete a work in 20 days and B can complete the same work in 25 days. If both of them work together, then in 3 days what percent of the total work will be completed?

A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?

If the selling price of an item is Rs 9750 after getting a discount of 25%, then what was its marked price (in Rs)?

Select the odd number from the given alternatives.

Let ΔABC and ΔABD be on the same base AB and between the same parallels AB and CD. Then the relation between areas of triangles ABC and ABD will be

Two whole numbers are such that the square of first number exceeds the second by 112 and the ratio of the numbers is 4:3. What is thevalue of smaller number?

The sum of the length and breadth of a rectangle is 6 cm. A square is constructed such that one of its sides is equal to a diagonal of the rectangle. If the ratio of areas of the square and rectangle is 5 : 2, the area of the square in cm2 is