On sports day, if 30 children were made to stand in a column, 16 columns could be formed. If 24 children were made a stand in a column, how many columns could be formed ?

The number of students in each section of a school is 24. After admitting new students, three new sections wer...

1/4 of Ahsan's money is equal to 1/6 of Babu's money. If both together have Tk. 600, what is the difference be...

The average of eight numbers is 14 and the average of six of these numbers is 16. What is the average of the r...

The average age of 30 students is 10 years and that of another group of 5 of them is 14 years. What is the ave...

If the two sides of a triangle are 5 and 6, the third side cannot be .............

The population of a country doubled every 10 years from 1980 to 2010. What was the percent increase in populat...