Quantitative Aptitude - Arithmetic Ability Questions

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

The shadow of a tower when the angle of elevation of the sun is 45°, is found to be 10 m longer than when it was 60° . The height of the tower is

9997 x 10003 = ?

What is the slope of the line perpendicular to the line passing through the points (8,­2) and (3,­1)?

If x2+5x+6 = 0, then the value of 2xx2-7x+6 is

Select the odd number from the given alternatives.

If x = a + 1a, y = a - 1a ,(a>0), then the value of x4+y4-2x2y2 is

If 4(x + 1) - 3 < 3 - x < 2x + 5; then the value of x is