An urn contains twenty chips, numbered 1 through 20. Two are drawn simultaneously. What is the...

An urn contains twenty chips, numbered 1 through 20. Two are drawn simultaneously. What is the probability that the numbers on the 2 chips will differ by more than 2?

Could you please specifically tell me how the # of ways to select a difference of less than 2 is 37 (19+18)?

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orchestra answered 1 year ago

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