Quantitative Aptitude - Arithmetic Ability Questions

If two marbles are picked at random, what is the probability that either both are red or both are green?

Rehman goes on a trip on his motor-cycle and rides for 661 kms. If he rides for 8 hours at a speed of 31 km/hr, find at what speed he travels for the remaining 7 hours of the journey?

If P travelled the first half of a journey at 40 kmph and the the remaining distance at 50 kmph, what is the average speed of his travel?

Choose the word is least like the other words in the group

Which one is the largest among the fractions (5/113), (7/120), (13/145) and (17/160)?

Calculate the area (in cm2) of a circle of radius 17.5 cm.

If x = y + 2 then x3 - y3 - z3 is

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?