How Many Different 7 Digit Phone Numbers - Search Videos

A country has a 7 digit phone number system of the form ABC-DEFG. The first digit A can be any number except 0 or 1. The next 2 digits, *B' and *C , can be any digit, except they cannot repeat: The last 4 digits can be any single digit number 0-9. How many unique phone numbers are possible?Question 1 options:7,200,0008,000,0008,100,0009,000,000

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