Quantitative Aptitude - Arithmetic Ability Questions

The average age of 36 students in a group is 14 years. When the teacher's age is included in it, the average increases by one. The teacher's age in years is

The average of ten numbers is 18. If one number is removed, then the average becomes 16, then what is the removed number?

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

Simple interest on a sum of Rs 50200 for 3 months is Rs 1380.5. What is the rate (in percentage) of interest per annum?

The Simple Interest(SI) for 16 years on an amount at particular rate is Rs 10000. If the principal is doubled at an interval of every 4 years and the rate is tripled at every such in terval, find the new Simple Interest(SI)

The height and the total surface area of a right circular cylinder are 4 cm and 8π sq.cm. respectively. The radius of the base of cylinder is

In the following question, select the odd word pair from the given alternatives.

What is the sum of the first 13 terms of an arithmetic progression if the 5th term is 1 and the 8th term is -17?