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  1. ...6 students( A -F)standing in a row , find the probability thatany two of A ,B and... and 8 boys) are arranged in a row withoutrestriction : Number of ways = 12P12...

    分類:科學及數學 > 數學 2013年04月25日

  2. Question: In a hall, the number of seats in a row is related to the row number I. It is...

  3. ...) = 10C8 x (1/2)10 = 45/1024 For geting exactly 8 heads in a row , the following events are favourable: 1) First...

    分類:科學及數學 > 數學 2011年05月24日

  4. ... are 9 seats in a row in a classroom. 5 students go... of 5 students in the 9 seats. 2014-03-15 22:26:43 補充: 不好意思,( a ) 部分可能我誤會了題目。 以上的...

    分類:科學及數學 > 數學 2014年03月25日

  5. ... see, there is no difference between two question. Each position in a row should be ordered, for example, the first position in the first row ...

    分類:科學及數學 > 數學 2010年12月24日

  6. ( a ) This is equivalent to arranging 10 people in a row and seat them in sequenceThere are 10!=3628800 ways...

    分類:科學及數學 > 數學 2013年04月28日

  7. ...).The group and the 5 females are then lining up in a row (6P6). The number of arrangements = 4­P4 x...

    分類:科學及數學 > 數學 2013年04月08日

  8. 7 places in a row is like this: _ _ _ _ _ _ _ Question: "What...vs (B, A ) There are 6 cases in total: (1) A B _ _ _ _ _ there are 4 places for C...

  9. Three boys and four girls are to be seated in a row . Find? ( a ) the total number of possible arrangements for the...

    分類:科學及數學 > 數學 2016年12月28日

  10. ... opponent's attacks, and win! 2. Throw 3 times in a row for a total of at least 220m! 3. Overcome a 1 second handicap to win...