Quantitative Aptitude - Arithmetic Ability Questions

In the given figure, AB, AE, EF, FG and GB are semicircles. AB = 56 cm and AE = EF = FG = GB. What is the area (in sq.cm) of the shaded region?

Ram's father is twice as old as Ram is. Eight years ago the age of Ram's father was 2.5 times his age. What is Ram's current age?

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.

Select the odd word/letters/number/number pair from the given alternatives.

At what percentage above the cost price must an article be marked so as to gain 33% after allowing a customer a discount of 5%?

Square of (7 ­- 4x) is

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

There are total 200 students in a school, of which 1/5th are boys. Find the number of girls in the school.