document.write( "Question 1173542: There are _____ways that a student can answer the exam with 7 correct answers and 8 incorrect answers. \n" ); document.write( "
Algebra.Com's Answer #798796 by ikleyn(52778)\"\" \"About 
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\n" ); document.write( "There are _____ways that a student can answer the exam with 7 correct answers and 8 incorrect answers.
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document.write( "It is assumed (although does not formulated explicitly in the problem) that there are 8+7 = 15 questions, in all.\r\n" );
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document.write( "There are  \"C%5B15%5D%5E7\"  ways to select 7 questions from 15 questions to answer them correctly.\r\n" );
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document.write( "The rest questions will be automatically answered incorrectly.\r\n" );
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document.write( "Your  ANSWER  is  \"C%5B15%5D%5E7\" = \"%2815%21%29%2F%287%21%2A8%21%29\" = \"%2815%2A14%2A13%2A12%2A11%2A10%2A9%29%2F%281%2A2%2A3%2A4%2A5%2A6%2A7%29\" = 6435 ways.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Actually, the problem in the post is worded INCORRECTLY.\r
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\n" ); document.write( "\n" ); document.write( "The correct wording is\r
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document.write( "    There are  15   questions  at an exam.\r\n" );
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document.write( "    In how many ways the student may answer 7 questions of them correctly ?\r\n" );
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\n" ); document.write( "\n" ); document.write( "I observe it very often at this forum that the \"local composers\" formulate their problems INCORRECTLY, \r
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