2 buah dadu dilempar Tentukan peluang munculnya jumlah mata dadu a6b kurang dari 6

{(1,1)(1,2)(1,3)(1,4)(1,5)(1,6)(2,1)(2,2)(2,3)(2,4)(2,5)(2,6)(3,1)(3,2)(3,3)(3,4)(3,5)(3,6)(4,1)(4,2)(4,3)(4,4)(4,5)(4,6)(5,1)(5,2)(5,3)(5,4)(5,5)(5,6)(6,1)(6,2)(6,3)(6,4)(6,5)(6,6)}

a. (1,5)(2,4)(3,3)(4,2)(5,1)
    n(A) = 5
    n(S) = 6² = 36
    P(A) = n(A) / n(S)
            = 5/36

b. (1,1)(1,2)(1,3)(1,4)(2,1)(2,2)(2,3)(3,1)(3,2)(4,1)
    n(A) = 10
    n(S) = 36
    P(A) = n(A) / n(S) 
            = 10/36
            = 5/18

Note. n(A) = banyaknya kejadian acak
          n(S) = banyaknya kejadian dalam suatu percobaan
          P(A) = peluang

Maaf bila jawaban saya salah dan terima kasih telah menerimanya^^