Hi ! As far as I can tell the ways you used it in your conversation are all correct ! The yahoo example is a little strange.
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Coach PhilipIf you know something "offhand" you know it well and don't have to think about it!So far so good;
Coach PhilipA: Can you give me some examples of products that are made in Sweden ?B: I don't know much about Sweden so I can't give you any examples offhand. But,