Verified by Ajay Kumar
What is the square root of 7744?
82
88
72
94
Answer: B
Solution
Using the identity \((a+b)^2=a^2+2ab+b^2\), \(88^2=(80+8)^2=6400+1280+64=7744\). Therefore, \(\sqrt{7744}=88\). Trick: Remember common perfect squares.
7744 का वर्गमूल क्या है?
82
88
72
94
उत्तर: B
हल
सूत्र \((a+b)^2=a^2+2ab+b^2\) के अनुसार, \(88^2=(80+8)^2=6400+1280+64=7744\)। अतः \(\sqrt{7744}=88\)। ट्रिक: सामान्य पूर्ण वर्गों को याद रखें।
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