Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Statistics Easy · 45s
Find the geometric mean of 4 and 16.
TopicStatistics
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
GM=√(ab)=√(4×16)=√64=8.
Final Answer: Option B — 8.00