Tiga buah uang logam dilambungkan bersama-sama, tentukan peluang munculnya

Tiga buah uang logam dilambungkan bersama-sama, tentukan peluang munculnya

a. Dua angka dan satu gambar
b. Dua gambar dan satu angka
c. tiga angka

Jawaban = a. 3/8
b. 3/8
c. 1/8

Ingat
p(A) adalah peluang kejadian An(A) adalah banyaknya titik sampel kejadian An(S) adalah banyaknya ruang sampel dari suatu percobaan

Ruang sampel dari tiga buah uang logam dilambungkan bersama-sama
AAA
AAG
AGA
AGG
GAA
GAG
GGA
GGG
n(S)=8

Asumsikan
A= kejadian muncul dua angka dan satu gambar
B= kejadian muncul dua gambar dan satu angka
C= kejadian muncul tiga angka

n(A) = 3
n(B) = 3
n(C) = 1

P(A)= 3/8
P(B)= 3/8
P(C)= 1/8

Jadi, peluang munculnya
a. Dua angka dan satu gambar=3/8
b. Dua gambar dan satu angka=3/8
c. tiga angka=1/8

Baca Juga :  As early as the 1940s, scientists (10. understand) that many kinds of wild animals faced extinction. Since that time, zoos (11. try) to save many endangered species, but relying on zoos to save species such as the rhinoceros is not enough. In the 1980s, the number of rhinos in the world (12. reduce) from 10,000 to 400. Many rhinos (13. kill) by poachers, but many also (14. die) in captivity. Zoo breeding programs for rhinos have not been successful. The best method of conservation (15. be) to leave them in their natural habitat. Number 12