A password of a computer used four digits where they are from 0 and 9. What is the probability that the password only consists of even numbers?
Choices
A) 1/4
B) 1/16
C) 1/32
D) 1/400
E) 1/800
There are five possibilities out of ten that the each digit is even, so the overall probability is 1/2 * 1/2 * 1/2 * 1/2 (answer 1/16)
<result>B</result>
A password of a computer used four digits where they are from 0 and 9. What is the probability that the password only consists of even numbers?