There were four polling centres for a certain election. The number of voters registered at every centre and the number of votes actually cast there are shown in the joint bar graph below.
(1) What is the number of voters registered at the Jawahar Vidyalaya centre and the actual number of votes cast?
(2) Which polling centre had the largest number of registered voters?
(3) At which polling centre were the largest number of votes cast?
(4) What is the number of votes cast at the School No. 5 centre?