Quantitative Aptitude - Arithmetic Ability Questions

Factorise x2 + 3x -­ 18

What is the simplest form of (1 + cosA)(cosecA ­ cotA)?

Two men are on opposite sides of a tower. They measure the angles of elevation of the top of the tower as 30 ̊ and 45 ̊ respectively. If the height of the tower is 50 m, the distance between the two men is (Take √3 = 1.73)

The cash difference between the selling price of an article at a profit of 4% and 6% is Rs. 3. The ratio of two selling prices is:

What is that least number that must be added to the product 684 × 686 to make it a perfect square?

Find the range of the data : 11,13, 9, 17, 13, 19, 10, 11

Simple interest on a sum for 18 months at 14% per annum is Rs 1365.What is the value (in Rs) of sum?

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 396, then what is the difference between the first and the third number?