Matematika

Pertanyaan

2 buah dadu dilempar bersama-sama. Hitunglah peluang:

A. Jumlah mata dadu genap,

B. Jumlah mata dadu lebih dari 8, &

C. Jumlah mata dadu genap & lebih dari 8.

1 Jawaban

  • .....1.....2......3.......4.......5.......6
    1.(1,1),(1,2),(1,3),(1,4),(1,5),(1,6)
    2.(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)
    3.(3,1),(3,2),(3,3),(3,4),(3,5),(3,6)
    4.(4,1),(4,2),(4,3),(4,4),(4,5),(4,6)
    5.(5,1),(5,2),(5,3),(5,4),(5,5),(5,6)
    6.(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)
    n(S) = 36
    A) (1,1),(1,3),(1,5),(2,2),(2,4),(2,6),(3,1),(3,3),(3,5),(4,2),(4,4),(4,6),(5,1),(5,3),(5,5),(6,2),(6,4),(6,6)
    n(A) = 18
    P = n(A)/n(S)
    P = 18/36
    P = 1/2
    B) (3,6),(4,5),(4,6),(5,4),(5,5),(5,6),(6,3),(6,4),(6,5),(6,6)
    n(B) = 10
    P = n(B)/n(S)
    P = 10/36
    P = 5/18
    C) (4,6),(5,5),(6,4),(6,6)
    n(C) = 4
    P = n(C)/n(S)
    P = 4/36
    P = 1/9

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