In the following table, the information is given about the number of families and the siblings in the families less than 14 years of age. Find the mode of the data.

In the following table, the information of number of girls per 1000 boys is given in different States. Fill in the blanks and complete the table.

The following table shows the information regarding the milk collected from farmers on a milk collection centre and the content of fat in the milk,measured by a lactometer.Find the mode of fat content.

The following frequency distribution table shows the amount of aid given to 50 flood affected families. Find the mean of the amount of aid.

The following frequency distribution table shows the amount of aid given to 50 flood affected families.Find the mean of the amount of aid.

Solve the following problems : The distance between Akola and Bhusaval is 168 km. An express train takes 1 hour less than passenger train to cover that distance . Find the average speed of each train, if the average speed of the express train is more by 14 km/h than the speed of the passenger train.

Solve the following problem using two variables: A two digit number and the number with digits interchanged add up to 143. In the given number the digit in unit's place is 3 more than the digit in the ten's place. Find the original number.