Which of the following is an example of an error of omission?

A receipt of $$25$ from AR J$.$ Gee entered in G$.$ Jay's account as a credit and debited to cash

An invoice for $$2,500$ sales is posted as $$2,050$

A purchase of cleaning materials recorded as DR cash $$50,$ CR cleaning materials $$50$

An invoice for $$1,300$ is lost and not recorded at all

$20$

$3$ points

Which of the following correctly sets out the accounting equation?

Net assets $=$ Capital $-$ Profit $+$ Drawings

Net assets $=$ Capital $-$ Profit $-$ Drawings

Net assets $=$ Capital $+$ Profit $+$ Drawings

Net assets $=$ Capital $+$ Profit $-$ Drawings