Mathematics, 25.05.2021 22:40 chayaharroch03

laura has a 3-digit combination lock on her briefcase and has forgtten the combination. If she knows that the first digit is a 3, and the second digit is a prime, how many numbers must Laura try before the lock is sure to open?

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laura has a 3-digit combination lock on her briefcase and has forgtten the combination. If she knows...