The most convenient cash book used by a petty trader operating in an area where there is no banking facility is?

The most convenient cash book used by a petty trader operating in an area where there is no banking facility is a Single Column Cash Book. A petty trader is someone who operates a small business with limited financial resources, and therefore, may not have access to a banking facility. In this case, a Single Column Cash Book is the most appropriate and convenient cash book to use because it is simple and easy to maintain. A Single Column Cash Book has only one column for recording cash transactions, and it is used to record both cash receipts and cash payments. This type of cash book is suitable for small businesses that do not have complex cash transactions. The Single Column Cash Book is a convenient option for petty traders because it provides a quick and easy way to record cash transactions without the need for complex accounting procedures. It helps the trader to keep track of their daily cash receipts and payments, which is essential for maintaining accurate financial records and monitoring the performance of the business. Therefore, the most convenient cash book used by a petty trader operating in an area where there is no banking facility is a Single Column Cash Book. The other options listed, such as the two-column, three-column, and four-column cash books, are suitable for larger businesses with more complex cash transactions.