Solved UPSC CDS/OTA Question
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Q · Number systemEasy · 45s
If a number is divisible by 9, what is the sum of its digits? (smallest possible)
TopicNumber system
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.
Solve step-by-step using number system concepts. If a number is divisible by 9, what is the sum of its digits? (smallest possible) → 9
Final Answer: Option B - 9