$$0.196 + 1.96 + 19.6 + 196 = ?$$

The average age of a family of 5 members is 24 years. If the age of the youngest member be 6 years, find the average age of the family at the birth of the youngest member-

In a mixture of syrup and water, there is 60 per cent syrup. If 5 litres of syrup is added then there is 35 per cent water in the mixture. The initial quantity of mixture was

Pipes A, B and are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours, respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously whenthe cistern is half-full, how many hours will be needed to fill the cistern?

The given Venn diagram represents the sports preferences of a group of college students. There are three games: A - Basketball, B - Football and C - Volleyball. Based on the diagram, how many play exactly one game?