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A telephone number consists of seven digits, the first three representing the exchange. how many different telephone numbers are possible within the 537 exchange g
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A telephone number consists of seven digits, the first three representing the exchange. how many different telephone numbers are possible within the 537 exchange g
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Oct 22, 2019
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A telephone number consists of seven digits, the first three representing the exchange. how many different telephone numbers are possible within the 537 exchange g
Mathematics
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Cwoebker
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we have that
1) Subtract 3 from 7, because the exchange is always the same.
that leaves 4 numbers
the number of possible digits in each number is 10
therefore
possibilities=10*10*10*10=10000 numbers
the answer is 10000
Dalton
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Oct 28, 2019
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