Forums > Engineering Questions and Answers > Puzzles
I am periodically the number 79. Long ago some attempted to make me from 29 but learned it couldn’t be done. If you add me to 80 I appear to be 47 temporarily. What am I ?
Last Post 15 Jul 2012 05:17 AM by ffinybryn. 1 Replies.
AddThis - Bookmarking and Sharing Button
Author Messages
hamza
New Member
New Member
Posts:62

--
14 Jul 2012 01:38 AM
    I am periodically the number 79.
    Long ago some attempted to make me from 29 but learned it couldn’t be done. If you add me to 80 I appear to be 47 temporarily.
    What am I ?
    ffinybryn
    Basic Member
    Basic Member
    Posts:101

    --
    15 Jul 2012 05:17 AM
    Periodically, 79 is the atomic number for Gold.
    (29 is Copper, 80 is Mercury and 47 is Silver)

    Forums > Engineering Questions and Answers > Puzzles
    ---