To Gain Access to His Account, a Customer Using an Automatic

question 7

Multiple Choice

To gain access to his account, a customer using an automatic machine (ATM) must enter a five-digit code. If repetition of same five digit is not allowed (for example, 55555) , how many possible combinations are there?

• A) 9,990
• B) 99,990
• C) 6,551
• D) 120
• E) 240

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