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K A passcode on a smartphone consists of 3 digits, and repetition of digits is allowed. a) Determine the number of possible three-digit passcodes.

K A passcode on a smartphone consists of 3 digits, and repetition of digits is allowed. a) Determine the number of possible three-digit passcodes. b) If a person finds a smartphone and randomly enters 3 digits, what is the probability that the correct passcode is entered? a) The number of possible three-digit passcodes is (Type a whole number.)

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