engineering recuitment NPCIL Stipendiary Trainee (Category II) Prelims 2025 Mock Test Quantitative Aptitude Algebra Identities

यदि \(\rm a+\frac{1}{a}=7\) है, तो \(\rm a^2+\frac{1}{a^2}=?\) का मान क्या है?

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47
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48
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