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<p><strong>Area Codes</strong></p> <p>An ares code consists of three digits. How many area codes are possible if:</p> <ol> <li>there are no restrictions?<br />{2:SA:\*~=\#sola}<br /><br /></li> <li>the first digit cannot be a 1 or a 0?<br />{2:SA:\*~=\#solb}<br /><br /></li> <li>What is the probability of selecting an area code at random that ends in an odd number if the first digit cannot be a 1 or a 0.<br />{2:SA:\*~=\#solc}</li> </ol>
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Tuesday, 5 November 2013, 10:16 AM
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