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![[Post New]](/templates/default/images/icon_minipost_new.gif) 30 Jun 2007 19:21:20 IST
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A lady desires to give a dinner party for 8 guests. in how many ways can the lady select for the dinner from her 12 friends, if 2 of the guests will not attend the party together? Ans:285 Plezzz help me!!!!!!!!!
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TAARA |
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30 Jun 2007 22:23:33 IST
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case 1: both the enemy frnds r not invited. total combination=10C8 -------------(1) case 2: any one of the enemy frnds r invited, total probable combinations= 2C1 X 10C7. ----------------(2) add case 1 and 2, u will get 285=answer....
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Keep working....................Iam comming..
your's only,
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2 Jul 2007 12:31:34 IST
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what is matrices? briefly explain the types of matrices. write a note
on solids and volume. Mention the types.
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