Quantitative Aptitude - Arithmetic Ability Questions

A square ground is to be covered by planting 100 saplings on each side. How many saplings are needed in all?

At 10% discount the selling price of an article is Rs 4500, what is the selling price (in Rs) if the discount is 27.5%?

If compound interest received on a certain amount in the 3rd year is Rs. 1,240, what will be the compound interest (in Rs) for the 4th year on the same amount at 9% rate of interest?

If Sec θ = 13/12, then what is the value of Sin θ?

If α and β are the roots of equation x2 – 2x + 4 = 0, then what is the equation whose roots are α3/β2 and β3/α2?

2*[­0.3(1.3 + 3.7)] of 0.8 = ?

If Data Interpretation and Modern Maths were taught for a combined time of 96 hours, then for how much time (in hours) were Number system and Geometry
taught?

Determine the value of 1r+1s when r3+s3=0 and r+s=6 ?