Two coins are flipped. One of the coins isn't a nickel, and the total value of both coins is 15 cents. What are the odds they both land on heads if flipped to the exact same height (assuming they don't reach terminal velocity) and one of the coins has landed vertically?

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What is the probability that both dice roll a four if at least one dice rolls a four?
>inb4 muh 50%

What is the probability that both dice roll a four if at least one dice rolls a four?
>inb4 muh 50%