{"id":"site-2405/zad/2429","paper_id":"site-2405","number":"2429","points":null,"ptype":"open","subject":"matematyka","category":"zbiory","year":2009,"month":null,"level":"podstawowa","text":"Średnia arytmetyczna pięciu liczb 5, x, 1, 3, 1 jest równa 3. Wtedy A. x=2 B. x=3 C. x=4 D. x=5","answer":null,"answer_text":null,"solution":null,"image":"img/site/2405/zad-2429.svg","solution_image":"img/site/2405/rozw-2429.svg","topics":null,"page_from":null,"source":"site","answer_source":null,"answer_text_source":null,"solution_source":null,"text_source":"site","source_label":"Matematyka · Zbiory zadań · 2009 (podstawowa)","subject_label":"Matematyka","category_label":"Zbiory zadań","text_html":"<p>Średnia arytmetyczna pięciu liczb 5, x, 1, 3, 1 jest równa 3. Wtedy A. x=2 B. x=3 C. x=4 D. x=5</p>","solutions":[{"source":"site","label":"matematykaszkolna.pl","kind":"image","image":"/img/site/2405/rozw-2429.svg"}]}