Q.Single Entry System of accounting can be applied for the business of

Single entry suits small sole proprietors (and small partnership firms) but is barred for companies, so 'all of these' cannot be right; the best single answer is (a) Sole proprietorship.

The single entry system is an incomplete, unscientific method suitable only for small concerns that cannot afford full double-entry book-keeping.

• (a) Sole proprietorship — small owner-run businesses commonly use single entry. Correct.
• (b) Partnership — small firms may also use it, but it is not the primary/typical case the option intends. …

The key difference: double entry is complete and verifiable (both aspects recorded, trial balance possible); single entry is incomplete (only one aspect/some transactions recorded, no trial balance).

Accounting from incomplete records = an unscientific, single-entry-type method where only partial records (cash and personal accounts) are kept, so the books are incomplete.

Accounting from incomplete information refers to a system (popularly the single entry system) in which proper double-entry records are not maintained for all transactions. Usually only the Cash Book and the personal accounts of debtors and creditors are kept, while real and nominal accounts are ignored. As a result, a trial balance cannot be drawn up and profit has to be found by the statement-of-affairs (net worth) method or the conversion method.

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