Quantitative Aptitude - Arithmetic Ability Questions

The corners of a square of side ‘a’ are cut away so as to form a regular octagon. What is the side of the octagon?

AB is a chord of the circle and its center is “O”. ON is perpendicular to AB. If the length of AB=20 cm, ON-(2√11) cm, find the radius (in cm) of the circle.

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

A mixture contains liquid A and liquid B in the ratio of 5 : 4. If 2 litres of liquid B is added to it, then the ratio of liquid A and liquid B becomes 7 : 6. What is the quantity (in litres) of liquid A in the mixture?

A 600 metres long train is running at the speed of 81 km/hr. If it crosses a platform in 40 seconds, then what is the length of the platform (in metres)?

Select the odd letters from the given alternatives.

Find out the odd word/letters/number/number pair from the given alternatives.

Select the odd number from the given alternatives.