The mean of (54,823)^2 and (54,825)^2 =	Choose the correct choice from the following answers.
A) (54,821)^2
B) (54,821.5)^2
C) (54,820.5)^2
D) (54,824)^2 + 1
E) (54,821)^2 – 1
54823^2 = (54824-1)^2 = 54824^2 + 1^2 - 2*54824*1   54822^2 = (54824+1)^2 = 54824^2 +1^2 + 2*54824*1   Taking the average of above 2 , we get (54824)^2 +1   hence the answer is (54,824)^2 + 1
<result>D</result>
The mean of (54,823)^2 and (54,825)^2 =