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 · Number systemMedium · 45s
What is the largest 2-digit number divisible by both 6 and 9?
TopicNumber system
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Solve step-by-step using number system concepts. What is the largest 2-digit number divisible by both 6 and 9? → 90
Final Answer: Option D — 90