１０件
How to write Japanese & Stroke order

Check also 件  

Names and idioms with total stroke of 6:
十六  千士  廿二  弓丈  氷る  

Names and idioms similar to １０件:
暗殺事件  付帯条件  高陞号事件  子供年齢条件追加特約  四一九事件  

Check stroke order for the words below:
孝昭  布佐  物価  歌聖  見済  命不定  乗輿播越  無量義経  予後不良