Quantitative Aptitude - Arithmetic Ability Questions

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Rs. 1. The sum (in Rs.) is:

The average of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?

The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What is the mean of marks of the students of three divisions of Class X?

What is the third proportional to 9 and 15?

In an alloy of German silver the ratio of copper to zinc was 17:7 while that of nickel to zinc was 4 :3. The ratio of copper to zinc to nickel in the alloy was

What is the simplest form of (1 + cosA)(cosecA ­ cotA)?

Simplify (b5x2a3z4)*(b3x2a4z5) / (a2b3z2)

Select the odd letters from the given alternatives.