यदि समानांतर श्रेढ़ी के लगातार तीन पद (x+1), (2x), (3x-5) हैं, तो (x) का मान क्या है?
If three consecutive terms of an arithmetic progression are (x+1), (2x), (3x-5), what is the value of (x)?
Explanation opens after your attempt
C. (6)
Concept
In an arithmetic progression, (2(2x)=(x+1)+(3x-5)), which gives (x=6). The middle term is the average of the two surrounding terms.
Why this answer is correct
The correct answer is C. (6). In an arithmetic progression, (2(2x)=(x+1)+(3x-5)), which gives (x=6). The middle term is the average of the two surrounding terms.
Exam Tip
समानांतर श्रेढ़ी में (2(2x)=(x+1)+(3x-5)), इससे (x=6) मिलता है। बीच का पद दोनों ओर के पदों का औसत होता है।
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