document.write( "Question 1122709: A seven-digit number (i.e. a whole number between 1000000 and 9999999) is selected at random. \r
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Algebra.Com's Answer #738869 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "a)  What is the probability that it contains no digits other than 6's, 7's, and/or 8's? \r\n" );
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document.write( "    It means that the given integer number is written using only the digits \"6\", \"7\" and/or \"8\".\r\n" );
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document.write( "    You may have any of these three digits in the 1-st (leftmost) position;\r\n" );
document.write( "                 any of these three digits in the 2-nd            position;\r\n" );
document.write( "                 any of these three digits in the 3-rd            position;\r\n" );
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document.write( "                 . . . . .       and so on  . . . . . . . . \r\n" );
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document.write( "                 any of these three digits in the 7-th            position.\r\n" );
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document.write( "    In all, it gives you   = 2187 different numbers.\r\n" );
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document.write( "    To find the probability under the question, divide this number by 9000000,\r\n" );
document.write( "       which is the number of all 7-digit numbers from 1000000  to  9999999.\r\n" );
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document.write( "    You will get the answer :  the probability under the question =  = ,\r\n" );
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document.write( "        \"expressed as fractions in lowest terms\".\r\n" );
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document.write( "b)  What is the probability it contains two 6's, three 7's, and two 8's? \r\n" );
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document.write( "Enter your answers as fractions in lowest terms. \r\n" );
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