Jawabanmu

Jawaban paling cerdas!
2014-05-28T15:03:38+07:00
N(S) = 10C4 =     10!         = 6!x7x8x9x10  = 7 x 3 x 10 = 210
                       4!(10 - 4)!      1x2x3x4 x 6!
n(E) = 9 yaitu (1111,2222,3333,...,9999)
P(E) = n(E)
           n(S)
         = 9/210
         = 3/70

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