Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If A + B = 90 deg and Cos B = 1/3, then the value of Sin A is

What would be the compound interest of Rs. 25000 for 2 yrs. at 5% per annum?

If two complimentary angles are in the ratio of 11 : 7, find the smaller angle.

If the measure of the interior angle of a regular polygon is 120 deg then how many sides does it have?

The co-ordinates of the centroid of a triangle ABC are (2 , 2). What are the co-ordinates of vertex C if co-ordinates of A and B are (7 , -1) and (1 , 2) respectively?

Dinesh purchases 10 dozens of apples at the rate of Rs 180 per dozen. He sold each one of them at the rate of Rs 19.5. What is the profit (in percentage) of Dinesh?

The least number to be added to 435 to make it a perfect square is