chevystewart880 chevystewart880

08-06-2018
Mathematics

contestada

How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and if no digit can be repeatd?

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ashleyymillerr ashleyymillerr

08-06-2018

8x10x9x8x7x6x5= 1209600

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