Answered

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A seven digit telephone number is of theform ABC-DEFG. In one particular state,the digit ‘A’ is restricted to any numberbetween 1 and 9. The digits B and Carerestricted to any number between 2 and9. The digits D,E,F, and G have norestriction. How many seven digit phonenumbers are possible with theserestrictions?

Sagot :

9 x 8 x 8 x 10 x 10 x 10 x 10 = 5760000 possible phone numbers

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