# What is the geometric means of the observations 125, 729, 1331?

 [ A ]    495 [ B ]    1485 [ C ]    2221 [ D ]    None of these
 Answer : Option A Explanation : G.M. = $3\sqrt{125 X 729 X 1331}$ = $3\sqrt{5^3 X 9^3 X 11^3}$ = 5 Ã— 9 Ã— 11 = 495