document.write( "Question 107310: Please help with the following question:\r
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document.write( "A student is to answer 10 out of 15 exam questions.
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document.write( "a) how many choices has he if he must answer the first 2 questions?
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document.write( "b) how many choices has he if he must answer the first or second question but not both of them?
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document.write( "c) how many choices has he if he mush answer exactly three of the first five questions?
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document.write( "d) how many choices has he if he must answer at least three of the first five questions?
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document.write( "e) how many choices of question has he without restrictions?\r
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document.write( "Thanks a lot! \n" );
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Algebra.Com's Answer #78453 by blc52877(2)![]() ![]() ![]() You can put this solution on YOUR website! A student is to answer 10 out of 15 exam questions.\r \n" ); document.write( "\n" ); document.write( "a) how many choices has he if he must answer the first 2 questions?\r \n" ); document.write( "\n" ); document.write( "There are 13 choices of which he must answer 8 more to satisfy the 10 answer requierment.\r \n" ); document.write( "\n" ); document.write( "b) how many choices has he if he must answer the first or second question but not both of them?\r \n" ); document.write( "\n" ); document.write( "There are 14 choices of which he must answer 9 more to satisfy the 10 answer requierment.\r \n" ); document.write( "\n" ); document.write( "c) how many choices has he if he mush answer exactly three of the first five questions?\r \n" ); document.write( "\n" ); document.write( "There are 12 choices of which he must answer 7 more to satisfy the 10 answer requierment.\r \n" ); document.write( "\n" ); document.write( "d) how many choices has he if he must answer at least three of the first five questions?\r \n" ); document.write( "\n" ); document.write( "There are 12 choices of which he must answer 7 more to satisfy the 10 answer requierment.\r \n" ); document.write( "\n" ); document.write( "e) how many choices of question has he without restrictions?\r \n" ); document.write( "\n" ); document.write( "10 out of 15\r \n" ); document.write( "\n" ); document.write( "Thanks a lot!\r \n" ); document.write( "\n" ); document.write( "You're welcome. \n" ); document.write( " |