462 =2*3*7*11
\(S_5\) = 2+3+7+11 = 23
\(S_1\) = 3
average = (\(S_1\)+\(S_5\))/2
= (23+3)/2
= 13
Ans B
\(S_5\) = 2+3+7+11 = 23
\(S_1\) = 3
average = (\(S_1\)+\(S_5\))/2
= (23+3)/2
= 13
Ans B
