Hello when I’m new to a forum I usually use the search function to make sure I’m not posting something redundant but that function is apparently not working so I thought I would ask here.

I just downloaded the “Kanji Vocab 1″ deck from Season 2 (http://www.textfugu.com/season-2/past-tense-nouns/4-3/) and practiced it.　　I noticed that　the card for 七 (alone, no other character) showed both the On and Kun readings ( しち　and なな　）as the answer. The all other cards with standalone kanji had only the On reading(s) for it and all the cards with compound kanji had the Kun readings only.

I’m very new to learning kanji… is the なな　in that card a typo and it should be only しち　instead? I want to make sure I didn’t miss anything that I should know about that particular kanji. Many thanks.