Question

Dua buah dadu dilempar bersama sama satu kali. peluang muncul mata dadu keduanya bilangan prima adalah...
a. 1/6
b. 1/4
c. 1/3
d. 3/8
e. 1/2

Answer 1

2 dadu dilempar => n(S) = 36
Muncul keduanya prima = (2,2), (2,3), (3,2), (2,5), (5,2), (3,3), (5,5), (3,5), (5,3) => n(A) = 9
P(A) = 9/36 = 1/4