document.write( "Question 1164753: a) In how many different ways can the letters of the word KNOWLEDGE be
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document.write( "arranged in such a way that the vowels always come together?\r
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document.write( "b) In a group of 6 boys and 4 girls, four children are to be selected.
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document.write( "In how many different ways can they be selected such that at least one boy
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document.write( "should be there?
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Algebra.Com's Answer #789174 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "In the word KNOWLEDGE, we have 6 different consonants and TRIO of vowels.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "We consider the trio as one single object (looking from the long distance).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "From this point of view, we have 6+1 = 7 objects to permute, which gives 7! = 5040 permutations.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Changing/switching the scope to close view, wee see that the trio of vowels admits 3 arrangements,\r\n" ); document.write( "\r\n" ); document.write( "giving the total number of all possible arrangements 3*5040 = 15120.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "ANSWER. The total number of all possible arrangements is 15120.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |