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 · LCM and HCFModerate · 45s
The sum of two numbers is 153 and their HCF is 17. Find their LCM if they are coprime after dividing by HCF.
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.
Numbers = 68 and 85; LCM = 17 × 68 × 85 ÷ HCF.
Final Answer: Option B - 306