Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letter/letters from the given alternatives.

ABC is a right angled triangle with angle A = 90 deg. Then the value of cos2A+cos2B+cos2C is

The area of a circle is 38.5 cm2. Find its circumference (in cm).

What is the distance between the points (4,­-8) and (­-2,0)?

The point P(3,­-2) divides the segment joining the points (x,0) and (0,y) in the ratio 1:3. Find x and y?

Determine the value of a+1b-1 when ab = 343.

In the following question, select the odd letter/letters from the given alternatives.

The bar chart given shows the sales of 3 types of cars in the Indian automotive industry over 4 years. All the sales figures have been shown in terms of 000 units.

Which of the following type of car has the highest increase in sales from 2009 to 2012?