document.write( "Question 376473: Test each of these numbers for divisibility by 3, 5, and 11 without using a calculator:
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\n" ); document.write( "\n" ); document.write( "a. 56743
\n" ); document.write( "b. 69916800\r
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Algebra.Com's Answer #267831 by Fombitz(32388)\"\" \"About 
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a) Digits add to \"5%2B6%2B7%2B4%2B3=25\" which is not divisible by 3, so the number is not divisible by 3.
\n" ); document.write( "Doesn't end in 0 or 5 so no chance with 5.
\n" ); document.write( "Also not divisible by 11.
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\n" ); document.write( "b) Digits add to \"6%2B9%2B9%2B1%2B6%2B8=39\" which is divisible by 3, so the number is divisble by 3.
\n" ); document.write( "Ends in 0 so it's divisible by 5.
\n" ); document.write( "Not divisible by 11.
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