Quantitative Aptitude - Arithmetic Ability Questions

A, B and C can complete a work in 20, 24 and 30 days respectively. All three of them starts together but after 4 days A leaves the job and B left the job 6days before the work was completed. C completed the remaining work alone. In how many days was the total work completed?

The surface area of a sphere is 5544 cm2. Find its diameter (in cm).

Two trains are moving in the same direction at the speed of 23 km/hr and 77 km/hr. The time taken by faster train to cross a man sitting in the slower train is 40 seconds. What will be the length (in metres) of the faster train?

Find the value of '?, if the mean of the data set 18, 16, 22, 13, ? = 16.

How many diagonals are there in octagon?

ΔABC is right angled at B. BD is an altitude. AD = 3 cm and DC = 9 cm. What is the value of AB (in cm)?

Compute 4923 / 547 - 10

If Sin4A - Cos4A = 1 then (A/2) in degrees is 0° < A ≤ 90°