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How many eight digit numbers can be formed if the leading digit cannot be zero and the last number cannot be one?

Sagot :

Answer:

Since only 0 and 1 are to be used, an 8 digit number will have a leading 1. The rest 7 places are free to be either 0 or 1 and can make 2^7 or 128 unique numbers.

Step-by-step explanation:

Thant's is the correct answer i'm sure

thanks you