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இரும எண் 10101-ஐ அதன் தசம மதிப்பிற்கு மாற்றவும்.

A21
B20
C19
D22
Answer & Solution
Correct answer: A. 21
10101 என்பது 16 + 4 + 1-க்கு சமம், இது 21-ஐக் கொடுக்கிறது.
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