Quantitative Aptitude - Arithmetic Ability Questions

If Sin θ = 20/29, then what is the value of Cos θ?

At 9.5% simple interest per annum a sum of money became Rs. 942 in 6 years. The sum initially invested was:

What is the rate of interest (in %) if simple interest earned on a certain sum for the 3 years is Rs 6,000 and compound interest earned for 2 years is Rs 4,160?

If the least common multiple of two numbers, 1728 and K is 5184, then how many values of K are possible?

A right circular cylinder has height 28 cm and radius of base 14 cm. Two hemispheres of radius 7 cm each are cut from each of the two bases of the cylinder. What is the total surface area (in cm2) of the remaining part?

A Navy captain going away from a lighthouse at the speed of 4[(√3) – 1] m/s. He observes that it takes him 1 minute to change the angle of elevation of the top of the lighthouse from 60 to 45 deg. What is the height (in metres) of the lighthouse?

3 men or 4 women can complete a job in 120 days. 12 men and 16 women will complete the same job in how many days?

A shopkeeper wants to earn 33% profit on an article after offering 30% discount. By how much percentage more he should mark the price of his article above cost price?