Quantitative Aptitude - Arithmetic Ability Questions

An arc of 30° in one circle is double an arc in a second circle, the radius of which is three times the radius of the first. Then the angles subtended by the arc of the second circle at its centre is

How many times does the number 5 occur in the range of numbers from 1 to 100?

The sum of 5/8 and 8/5 is

Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hrs, respectively, the third can drain the cistern, when filled, in 6 hrs. If all the three pipes are opened simultaneously when the cistern is half-full, how many hours will be needed to fill the cistern?

ΔABC is similar to ΔDEF. If the ratio of similar sides is K:1, the ratio of their areas is

The lengths of two parallel sides of a trapezium are 21 cm and 9 cm. If its height is 10 cm, then what is the area (in cm2) of the trapezium?

What is the square root of 5041?

The length of one side and the diagonal of a rectangle are 8 cm and 17 cm respectively. Find its area (in cm2).