if a four-digit number is selected at random from the integers 1000 to 9999, inclusive, what is the probability that the first digit and the last digit of the integer will both be exactly two less than the middle two same digit?	Select the correct option: A) 1:900 B) 7:900 C) 7:9000 D) 1:100 E) 7:100
You are asked about all 3 digit numbers that conform to the follow type: ABA , where A= B-2.   There are 900 numbers between 100 and 999 (inclusive).   Numbers of the form A7:900A are: 1331, 2442,3553,4664,5775,6886,7997 = total 7   Thus the probability asked = 7/9000   7:900 is the correct answer.
<result>B</result>
if a four-digit number is selected at random from the integers 1000 to 9999, inclusive, what is the probability that the first digit and the last digit of the integer will both be exactly two less than the middle two same digit?