document.write( "Question 1173253: mr. santos has set 8 questions for a math test.\r \n" );
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document.write( "d.) if the most difficult question and the easiest one cannot be set next to each other, how many permutations are there for 8 questions?\r \n" );
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document.write( "can u please show me the solution. thank you so much \n" );
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