Quantitative Aptitude - Arithmetic Ability Questions

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?

Find the value of '?, if the mean of the data set 18, 16, 22, 13, ? = 16.

Find the number that is as much greater than 39 as is less than 79.

A sum of money invested at simple interest becomes 13/10 of itself in 2 years and 6 months. What is the rate (in percentage) of interest per annum?

What is the value of 299996 x 300004?

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

The order of rotational symmetry of a rectangle is

The number of sides of a regular polygon whose exterior angles are each 40 deg is