document.write( "Question 1070238: 2+2=10 how it's possible? \n" ); document.write( "
Algebra.Com's Answer #685347 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "It's true in base 4, called the 'quaternary numeral system', where\r\n" );
document.write( "counting is done this way.  \r\n" );
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document.write( "1,2,3,10,11,12,13,20,21,22,23,30,31,32,33,100,101,102,...\r\n" );
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document.write( "Only the digits 0,1,2, and 3 are used  in the quaternary numeral system.  \r\n" );
document.write( "2+2=10 in the quaternary system is not read \"two plus two equals ten\",\r\n" );
document.write( "it's read \"two plus two equals 'one zero'\".  \"10\" in quaternary is really\r\n" );
document.write( "the same as four in the decimal numeral system, 11 is the same as five, etc.\r\n" );
document.write( "When counting up, when you get to a 3, you change it to 0 and add 1 to the\r\n" );
document.write( "next digit to the left if it is not 3.  If it is 3, you change it to 0, and \r\n" );
document.write( "add one to the digit left of it.  When all the digits are 3's, the next\r\n" );
document.write( "number will have one more digit, and will begin with 1 and all the rest\r\n" );
document.write( "zeros.\r\n" );
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document.write( "Go here to read about it:\r\n" );
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document.write( "https://en.wikipedia.org/wiki/Quaternary_numeral_system\r\n" );
document.write( "Edwin
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