document.write( "Question 775270: How many 4 letter words (doesn’t matter if they are nonsense) can be made from the letters AABBCD? \n" ); document.write( "
Algebra.Com's Answer #472801 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
AABBCD
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document.write( "We first work it as if the A's were distinguishable, as if it were\r\n" );
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document.write( "AaBbCD\r\n" );
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document.write( "Then there would be 6! = 720 ways\r\n" );
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document.write( "However, the A and a could be arranged in each arrangement\r\n" );
document.write( "in 2! ways, and the B and the b could be arranged in 2! ways,\r\n" );
document.write( "and we wouldn't be able to tell the difference, so we must\r\n" );
document.write( "divide twice by 2!.\r\n" );
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document.write( "Answer \"7%21%2F%282%212%21%29\" = \"720%2F%282%2A2%29\" = \"720%2F4\" = 180 ways.\r\n" );
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document.write( "Here are all 180 ways:\r\n" );
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document.write( "1. AABBCD  2. AABBDC  3. AABCBD  4. AABCDB  5. AABDBC  6. AABDCB  7. AACBBD  8. AACBDB  9. AACDBB  10.  AADBBC\r\n" );
document.write( "11. AADBCB  12. AADCBB  13. ABABCD  14. ABABDC  15. ABACBD  16. ABACDB  17. ABADBC  18. ABADCB  19. ABBACD  20.  ABBADC\r\n" );
document.write( "21. ABBCAD  22. ABBCDA  23. ABBDAC  24. ABBDCA  25. ABCABD  26. ABCADB  27. ABCBAD  28. ABCBDA  29. ABCDAB  30.  ABCDBA\r\n" );
document.write( "31. ABDABC  32. ABDACB  33. ABDBAC  34. ABDBCA  35. ABDCAB  36. ABDCBA  37. ACABBD  38. ACABDB  39. ACADBB  40.  ACBABD\r\n" );
document.write( "41. ACBADB  42. ACBBAD  43. ACBBDA  44. ACBDAB  45. ACBDBA  46. ACDABB  47. ACDBAB  48. ACDBBA  49. ADABBC  50.  ADABCB\r\n" );
document.write( "51. ADACBB  52. ADBABC  53. ADBACB  54. ADBBAC  55. ADBBCA  56. ADBCAB  57. ADBCBA  58. ADCABB  59. ADCBAB  60.  ADCBBA\r\n" );
document.write( "61. BAABCD  62. BAABDC  63. BAACBD  64. BAACDB  65. BAADBC  66. BAADCB  67. BABACD  68. BABADC  69. BABCAD  70.  BABCDA\r\n" );
document.write( "71. BABDAC  72. BABDCA  73. BACABD  74. BACADB  75. BACBAD  76. BACBDA  77. BACDAB  78. BACDBA  79. BADABC  80.  BADACB\r\n" );
document.write( "81. BADBAC  82. BADBCA  83. BADCAB  84. BADCBA  85. BBAACD  86. BBAADC  87. BBACAD  88. BBACDA  89. BBADAC  90.  BBADCA\r\n" );
document.write( "91. BBCAAD  92. BBCADA  93. BBCDAA  94. BBDAAC  95. BBDACA  96. BBDCAA  97. BCAABD  98. BCAADB  99. BCABAD  100.  BCABDA\r\n" );
document.write( "101. BCADAB  102. BCADBA  103. BCBAAD  104. BCBADA  105. BCBDAA  106. BCDAAB  107. BCDABA  108. BCDBAA  109. BDAABC  110.  BDAACB\r\n" );
document.write( "111. BDABAC  112. BDABCA  113. BDACAB  114. BDACBA  115. BDBAAC  116. BDBACA  117. BDBCAA  118. BDCAAB  119. BDCABA  120.  BDCBAA\r\n" );
document.write( "121. CAABBD  122. CAABDB  123. CAADBB  124. CABABD  125. CABADB  126. CABBAD  127. CABBDA  128. CABDAB  129. CABDBA  130.  CADABB\r\n" );
document.write( "131. CADBAB  132. CADBBA  133. CBAABD  134. CBAADB  135. CBABAD  136. CBABDA  137. CBADAB  138. CBADBA  139. CBBAAD  140.  CBBADA\r\n" );
document.write( "141. CBBDAA  142. CBDAAB  143. CBDABA  144. CBDBAA  145. CDAABB  146. CDABAB  147. CDABBA  148. CDBAAB  149. CDBABA  150.  CDBBAA\r\n" );
document.write( "151. DAABBC  152. DAABCB  153. DAACBB  154. DABABC  155. DABACB  156. DABBAC  157. DABBCA  158. DABCAB  159. DABCBA  160.  DACABB\r\n" );
document.write( "161. DACBAB  162. DACBBA  163. DBAABC  164. DBAACB  165. DBABAC  166. DBABCA  167. DBACAB  168. DBACBA  169. DBBAAC  170.  DBBACA\r\n" );
document.write( "171. DBBCAA  172. DBCAAB  173. DBCABA  174. DBCBAA  175. DCAABB  176. DCABAB  177. DCABBA  178. DCBAAB  179. DCBABA  180.  DCBBAA\r\n" );
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document.write( "Edwin
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