In a promotion, 50 silver dollars are placed in a bag, one of which is valued at more than $10,000. The winner of the promotion is given the opportunity to reach into a bag, while blindfolded, and pull out five coins. what is the probability that 1 of the 5 coins is the one valued at more than $10,000?

I believe this to be either a permutation problem or combination problem but I have a hard time deciphering what makes them different.

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