Quantitative Aptitude - Arithmetic Ability Questions

If X + Y = 19 and X - Y = 7, then XY = ?

Find the maximum area of a rectangle field which is surrounded by a rope of 400 m.

A telegraph post is bent at a point above the ground. Its top just touches the ground at a distance of 8√3 m from its foot and makes an angle of 30° with the horizontal. The height (in metre) of the post is

The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?

In the two triangles ABC and DEF the sides AB = DE and BC = EF. Which of the following option is correct which results in the ∆ABC ≅∆DEF?

If 70% of 5/7th of a number is 90, find the number.

The number of sides of a regular polygon whose exterior angles are each 60 deg is

Slope of the side DA of the rectangle ABCD is 1/3. What is the slope of the side AB?