Discreet Math / Probability,

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How many integers from 100 through 999 must you pick in order to be sure that at least two of them have a digit in common? (For example, 256 and 530 have the common digit 5.)

Discreet Math / Probability,

Show clear steps

How many integers from 100 through 999 must you pick in order to be sure that at least two of them have a digit in common? (For example, 256 and 530 have the common digit 5.)

SOLUTION: From given data, How many integers from 100 through 999 must you pick in order to be sure that at least two of them have a digit in common? We need to determine integers from100 through 99