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How many combinations are there for a phone number consisting 4 numbers?
Wiki User
∙ 14y ago
10,000. from 0000 to 9999.
Wiki User
∙ 14y ago
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How many combinations are there for the last four digits of a phone number if the number must be unique?
9999
Which data type is better to use for storing phone number in the following format 977-1-1234567?
Phone numbers should always be stored in a text format and never as in a number field. There are several of reasons for this. You never do calculations with phone numbers; you may have a zero at the start of a phone number, which would disappear if left in a number format and you may, as in this case, have other characters in a phone number that are not digits, which would not be accepted in a number format.
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How many combinations are there for the last four digits of a phone number if the number must be unique?
9999
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