Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 2 and ab = 24, then what is the value of a3- b3?

A can do 1/3rd of a job in 3 days and B can do half of the job in 9 days. If they work on it together, then in how many days can they finish half of the job?

A number is divided by 52, we get 27 as remainder. On dividing the same number by 13, what will be the remainder?

In a class of 65 students there are 39 girls. The average weight of these girls is 60 Kg and average weight of the full class is 64 kgs. What is the average weight of the boys of the class?

If 5+x+5-x5+x-5-x = 3,then what is the value of x ?

If 2x + 6y = 3xy and 10x -­ 3y = 4xy, find x, y.

A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value of ∠AOB ?

In the following question, select the odd number from the given alternatives.