@21_pmac They are taken from pre 1-9 papers and are based on topics that are included in the 1-9 specification. Try… https://t.co/bLIbkHd6sK - The Calculator Guide from Twitter

They are taken from pre 1-9 papers and are based on topics that are included in the 1-9 specification. Trying to make use of the old q's.

— Tʜᴇ Cᴀʟᴄᴜʟᴀᴛᴏʀ Gᴜɪᴅᴇ (@GuideCalculator) September 2, 2017

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September 02, 2017 at 07:18PM
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