document.write( "Question 1139436: Carl is choosing a four-character password for his cell phone. The password can contain letters
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Algebra.Com's Answer #759896 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "In all, Carl can use 26 + 10 = 36 symbols.\r\n" );
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document.write( "Without repeating, there are  36*35*34*33 = 1413720 different possible codes.\r\n" );
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document.write( "Any of 36 symbols in the very first leftmost position;\r\n" );
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document.write( "then any of 35 remaining symbols in the 2-nd position;\r\n" );
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document.write( "    . . .  and  so  on  . . . \r\n" );
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