A four-digit code can consist of the digits 0 ~ 9 except that it does not contain the digits 1, 3, 4, and 5 at all. If repeated digits are allowed, what is the probability that it has at least one even digit?	Choose the correct choice from the following choices.
A) 35/36
B) 49/50
C) 80/81
D) 100/101
E) 120/121
P(no even digits) = 1/3*1/3*1/3*1/3 = 1/81   P(at least one even digit) = 1 - 1/81 = 80/81   The answer is 80/81.
<result>C</result>
A four-digit code can consist of the digits 0 ~ 9 except that it does not contain the digits 1, 3, 4, and 5 at all. If repeated digits are allowed, what is the probability that it has at least one even digit?