document.write( "Question 26893: For wat intergral values of n is the expression 1n + 2n + 3n + 4n divisible by 5?\r
\n" ); document.write( "\n" ); document.write( "*note n values are writen in superscript* \n" ); document.write( "

Algebra.Com's Answer #46158 by 303795(602) $\"\"$ $\"About$

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$\"1%5En+%2B+2%5En++%2B+3%5En++%2B+4%5En+\"$ \r
\n" ); document.write( "\n" ); document.write( "Whenever n is divisible by 4 the last digit of the total ends in 4. This number can not be divided by 5.\r
\n" ); document.write( "\n" ); document.write( "All other values of n end in 0. This is therefore divisible by 5.\r
\n" ); document.write( "\n" ); document.write( "Note n must be positive.
\n" ); document.write( "n Total
\n" ); document.write( "1 10
\n" ); document.write( "2 30
\n" ); document.write( "3 100
\n" ); document.write( "4 354
\n" ); document.write( "5 1300
\n" ); document.write( "6 4890
\n" ); document.write( "7 18700
\n" ); document.write( "8 72354
\n" ); document.write( "9 282340
\n" ); document.write( "10 1108650
\n" ); document.write( "11 4373500
\n" ); document.write( "12 17312754
\n" ); document.write( "13 68711380
\n" ); document.write( "14 273234810
\n" ); document.write( "15 1088123500
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