Quantitative Aptitude - Arithmetic Ability Questions

What is the measure of an exterior angle of a regular polygon of 10 sides?

If 2 shirts are offered free on purchase of 3 shirts priced Rs 600 each, then what will be the effective discount on each shirt?

The LCM of 72 and 84 is:

A's salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose?

If two successive discounts of 30% and 10% are given, then what will be the ratio of marked price to selling price?

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 given alternatives.

Point P (-2, 5) is the midpoint of segment AB. Co-ordinates of A are (-5, y) and B are (x, 3). What is the value of x?

What is the value of (1/2) Sec 30° + √2 Tan 60°?