Quantitative Aptitude - Arithmetic Ability Questions

Find the total surface area (in cm2 ) of a hemisphere of diameter 42 cm.

Point A divides segment BC in the ratio 5:1. Co-ordinates of B are (6 ,-4) and C are (0,8). What are the co-ordinates of point A?

Among four students sitting in a row, average age of last three students is 20 years and the average age of first three students is 21 years. If the age of first student is 26 years, then what is the age (in years) of the last student?

√[(1 ­ sinA)/(1 + sinA)] is equal to?

The lengths of diagonals of a rhombus are 24cm and 10cm the perimeter of the rhombus (in cm ) is :

In the last financial year, a car company sold 41,800 cars . In this year, the target is to sell 51,300 cars . By what percent must the sale be increased ?

Rearrange the jumbled up letters in their natural sequence ad find the odd one out.

What is the value of ( 1/3 + cosec30)?