ssc online exam test cgl

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SSC CGL Tier 1 :: QA Test 9
Home » SSC CGL Tier 1 » QA Test 9 » General Questions - Discussion
1 . What is the geometric means of the observations 125, 729, 1331?
[ A ]    495 right [ B ]    1485
[ C ]    2221 [ D ]    None of these
Answer : Option A
Explanation :
G.M. = $3sqrt{125 X 729 X 1331}$ = $3sqrt{5^3 X 9^3 X 11^3}$ = 5 × 9 × 11 = 495
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