Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
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Q · LCM and HCFModerate · 45s
Least number remaining 4 for 5,6,7.
TopicLCM and HCF
Question Typemultiple choice
DifficultyModerate
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
LCM=210 ⇒ +4=214.
Final Answer: Option B - 109