Quantitative Aptitude - Arithmetic Ability Questions

The average of 12 numbers is 9. If each number is multiplied by 2 and added to 3, the average of the new set of numbers is

The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?

The average marks of 10 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 34 instead of 43. What is the correct average?

Find the perimeter (in cm) of a semicircle of radius 14 cm.

The radius of a hemisphere is 14 cm, find its volume?

At 8% simple interest per annum a sum of money becomes Rs. 300 in 2.5 years. What was the sum invested?

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

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