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How many 7 digit phone numbers are possible if the first digit can not be a 0 or a 1?
Wiki User
∙ 13y ago
8*10*10*10*10*10*10 = 8000000
If this is a UK question, don't forget that numbers beginning 999 are also not issued, in fact usually 990 to 999 are not issued.
This reduces the figure to 7 900 000 or so.
Wiki User
∙ 13y ago
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How many different 7 digit phone numbers are possible if the first digit cannot be 0 or 1?
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How many different 7 digit phone numbers are possible if the first digit cannot be 0 or 1?
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Using your rule - essentially, it's the simplified sum of 9999999-2000000 which is a total of 7999999 numbers !
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How many 7-digit phone numbers can be formed if the first digit cannot be 0 and any digit can be repeated?
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