The number of sentences in a text summary varies depending on the complexity and length of the original passage. It also depends on how detailed the resume has to be.
A summarized passage should be concise and focused, capturing the main ideas of the original. It can range from a single sentence to a few paragraphs. Typically, a summary is reduced to a few sentences or a short paragraph. The key is to provide an overview of the main points without including unnecessary details or examples.