Quantitative Aptitude - Arithmetic Ability Questions

If the time increases by 7 years, then simple interest increases by Rs 8400 on a sum of Rs 6000. What is the rate (in percentage) of interest per annum?

√(cosec2 -­ 1)/cosecA is equal to?

If sec -7π/4 = x, then the value of x is

ABCD is a parallelogram in which AB = 7 cm, BC = 9 cm and AC = 8 cm. What is the length (in cm) of other diagonal?

Between 200 and 400 how many numbers are divisible by 7?

Find the value of 'y' if y84 = 225

If a website is selling smartphone at Rs 18,000 which is marked at Rs 25,000, then what is the discount (in %) at which the smartphone is being sold?