You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "how many packs in a carton of cigaretts?" whose answer is 10.
Each document should contain about 30 words, and these documents should contain useful information.

Query: standard number of packs in a carton of cigarettes
Useful Output:

Doc 1: Many countries have adopted laws setting minimum cigarette pack sizes at 20 per pack. Going further to standardize pack sizes makes sense to disrupt brand
Doc 2: A minimum of 20 cigarettes per pack has been imposed by many countries (e.g., the European Union Tobacco Products Directive (2014/40/EU)) in
Doc 3: Generally speaking, a pack of cigarettes will typically include 20 cigarettes. On the other hand, different nations have varied amounts of cigarettes in their
Doc 4: The standard number of cigarettes per pack is 20. However, packaging can be customized depending on market demand and consumer behavior.
Doc 5: As discussed above, standard cigarette cartons contain exactly 200 cigarettes distributed throughout ten packs. With 20 cigarettes inside each