Quantitative Aptitude - Arithmetic Ability Questions

Which of the following numbers is a perfect square?

10 Consecutive numbers are given. If the average of the two numbers given in the middle is 13.5, then what is the sum of the first 6 numbers?

Jaikishen can do a piece of work in 15 hours. If he is joined by Jhanvi who is 50% more efficient, in what time will they together finish the work?

Find the mean value of 2, 3, 3, 4, 6, 7

For what value of X, 211X will be a perfect square?

If the perimeter of a semicircle is 36 cm, then find its area (in cm2).

Given a -­ b = 2, a3 - b3=26 then (a + b)2 is

Rohit buys a ball for Rs 450 and sells it. Rohit gives two successive discount of 20% and 5% to the customer. What will be the selling price (in Rs) of the ball?