• Coin/COA Mismatch in 1 oz American Eagle?

    I have been contemplating the sale of a $50 American Eagle Proof given to me as a gift many years ago, and in examining the contents of the case more closely, I've noticed that while both the spine of the case and the coin itself read '1987' (MCMLXXXVII) the COA reads 1986. How unusual is this? Will it cause any difficulties at sale?
    I have been contemplating the sale of a $50 American Eagle Proof given to me as a gift many years ago, and in examining the contents of the case more closely, I've noticed that while both the spine of the case and the coin itself read '1987' (MCMLXXXVII) the COA reads 1986. How unusual is this? Will it cause any difficulties at sale?
    1 answer · Hobbies & Crafts · 9 years ago
  • How can I solve (1/5)^m*(1/4)^18=5*10^-36 for m without using a calculator?

    This question was the first asked in an official GMAT practice exam, and should therefore be of only medium difficulty, but I am completely at a loss as to how it can be solved without a calculator (ideally within two minutes).
    This question was the first asked in an official GMAT practice exam, and should therefore be of only medium difficulty, but I am completely at a loss as to how it can be solved without a calculator (ideally within two minutes).
    5 answers · Mathematics · 1 decade ago