Quantitative Aptitude - Arithmetic Ability Questions

The perimeter of a square is 30 cm. Find its area (in cm²).

The distance between the points (11,­5) and (k,0) is 13. Find k.

A man buys 10 oranges for Rs. 3 and sells 8 for Rs. 3. Calculate his gain percent.

If in 2 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs 7000 in 3 years at the same rate?

3cosA is equal to

2sin[(C+D)/2].cos[(C­-D)/2] is equal to

In the following question, four number pairs are given. The number on left side of (–) is related to the number of 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.

What is the reflection of the point (5, -2) in the line x = -1?