What are the three different types of personal accounts?

State the principles of double entry system of book keeping.

What is double entry system? State its advantages.

Show the accounting equation on the basis of the following transactions:
i) Ramya started business with Cash   Rs.25,000
ii) Purchases goods from Harsha   Rs.20,000
iii) Sold goods to Amala costing Rs.18,000    Rs.25,000
iv) Ramya withdrew from business   Rs.5,000

Classify the following into personal, real and nominal accounts.
(a) Capital
(b) Building
(c) Carriage inwards
(d) Cash
(e) Commission received
(f) Bank
(g) Purchases
(h) Chandru
(i) Outstanding wages