यदि ( (a+b+c)2 ) के दृश्य मॉडल में \(a^2+b^2+c^2\) और (2ab+2bc) दिख रहा है, तो कौन-सा भाग छूटा है?
If the model of ( (a+b+c)2 ) shows \(a^2+b^2+c^2\) and (2ab+2bc), which part is missing?
Explanation opens after your attempt
C. (2ca)
Concept
Among the three mixed pairs, the (ca) pair also appears twice. In exams, complete all pair combinations.
Why this answer is correct
The correct answer is C. (2ca). Among the three mixed pairs, the (ca) pair also appears twice. In exams, complete all pair combinations.
Exam Tip
तीन मिश्रित जोड़ियों में (ca) जोड़ी भी दो बार आती है। परीक्षा में सभी जोड़ी संयोजन पूरे करें।
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