allery349-ன் வர்க்கம் என்ன?
A122801
B122881
C121801
D120801
Answer & Solution
Correct answer: C. 121801
1. 349 என்பதை (350 − 1) என எழுதவும்.
2. (350 − 1)² = 350² − 2·350 + 1 = 122500 − 700 + 1.
3. இது 121801-க்குச் சமம்.
_ஆதாரம்: RRB குரூப் D (RRC) முந்தைய ஆண்டு வினாத்தாள், 27-10-2013 அன்று நடைபெற்றது, வினா 18._
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