यदि समानांतर श्रेढ़ी के लगातार तीन पद (x), (x+6), (2x) हैं, तो (x) का मान क्या है?
If three consecutive terms of an arithmetic progression are (x), (x+6), (2x), what is the value of (x)?
Explanation opens after your attempt
D. (12)
Concept
In an arithmetic progression (2(x+6)=x+2x), so (x=12). The middle term is the average of the two surrounding terms.
Why this answer is correct
The correct answer is D. (12). In an arithmetic progression (2(x+6)=x+2x), so (x=12). The middle term is the average of the two surrounding terms.
Exam Tip
समानांतर श्रेढ़ी में (2(x+6)=x+2x), इसलिए (x=12)। बीच का पद दोनों ओर के पदों का औसत होता है।
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