यदि समांतर श्रेणी (5,,x,,15) है, तो (x) का मान क्या होगा?
If (5,,x,,15) is an arithmetic progression, what is the value of (x)?
Explanation opens after your attempt
C. (10)
Concept
The middle term is the average of (5) and (15), so \(x=\frac{5+15}{2}=10\). In exams, take the average for the middle term in three-term progressions.
Why this answer is correct
The correct answer is C. (10). The middle term is the average of (5) and (15), so \(x=\frac{5+15}{2}=10\). In exams, take the average for the middle term in three-term progressions.
Exam Tip
बीच का पद (5) और (15) का औसत है, इसलिए \(x=\frac{5+15}{2}=10\) है। परीक्षा में तीन पदों वाली श्रेणी में मध्य पद का औसत लें।
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