Solved UPSC CDS/OTA Question
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Q · LCM and HCFModerate · 45s
Find the least number to add to 6412 to make divisible by 15, 18, and 24.
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=360; remainder=20 ⇒ add 340.
Final Answer: Option A — 20