यदि (a-b=5) और (a+b=13), तो (b) का मान क्या होगा?
If (a-b=5) and (a+b=13), what is the value of (b)?
Explanation opens after your attempt
A. (4)
Concept
Subtracting the first expression from the second gives (2b=8). Therefore, (b=4).
Why this answer is correct
The correct answer is A. (4). Subtracting the first expression from the second gives (2b=8). Therefore, (b=4).
Exam Tip
दूसरे व्यंजक में से पहला घटाने पर (2b=8) मिलता है। इसलिए (b=4) है।
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