Let and .Suppose A and B are independent.What is ?
A)0.12
B)0.3
C)0.4
D)0.7

Question

Let  and  .Suppose A and B are independent.What is  ?
A)0.12 
B)0.3 
C)0.4 
D)0.7

Quizplus · Accepted Answer

The first 8 characters of the three given strings (11eaa4ae) are the same, indicating that they are related in some way. The last 8 characters (TB2339_11) may be irrelevant to the question. The 9th character in each string represents a different value (a, b, and d), which suggests that this is the distinguishing factor. Since A and B are independent, the probability of A having the value 'd' is 1/3, and the same goes for B. Therefore, the probability of both A and B having the value 'd' is 1/3 * 1/3 = 1/9. This is equivalent to 0.111... rounded to the nearest tenth, which is 0.1. Therefore, the answer is 0.4, as it is the only option that contains 0.1 as one of its digits.