Quantitative Aptitude - Arithmetic Ability Questions

The rate of discount on an article whose marked price is Rs. 170 and selling price is Rs. 130?

If the angles of a triangle are in the ratio of 2 : 5 : 8, then find the value of the largest angle.

If an interior of a regular polygon is 170o, then the number of sides of the polygon is

A solid right circular cone of radius 10 cm and height 8 cm is put inside a cylindrical vessel of radius 11 cm and height 9 cm. How much water in cubic cm will be required to fill the cylindrical vessel completely?

P can do a piece of work in 60 days & Q can do the same work in 50 days. Find the ratio of working efficiencies of P to Q.

If cos(A-B) - cos(A+B) = x, then the value of x is

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the