The sum of a die's front and back is always sevenPremium ChapterChapter 78 - The sum of a die's front and back is always sevenUnlock to continue reading308 coinsSALESave 22 coinsSign in to UnlockUnlocking grants permanent access to this chapterPreviousPrevCh. 78 / 184Ch. 787788 / 184NextNextComments 000TopNewJoin the conversation! Sign in to leave a comment.Sign In to CommentLoading comments...