यदि (x-3), (2x+1), (4x-1) समांतर श्रेणी के लगातार तीन पद हैं, तो (x) का मान क्या है?
If (x-3), (2x+1), (4x-1) are three consecutive terms of an arithmetic progression, what is (x)?
Explanation opens after your attempt
C. (6)
Concept
For three consecutive terms, (2(2x+1)=(x-3)+(4x-1)), giving (x=6). The middle term is the average of the two surrounding terms.
Why this answer is correct
The correct answer is C. (6). For three consecutive terms, (2(2x+1)=(x-3)+(4x-1)), giving (x=6). The middle term is the average of the two surrounding terms.
Exam Tip
लगातार तीन पदों में (2(2x+1)=(x-3)+(4x-1)), इससे (x=6) मिलता है। बीच वाला पद दोनों ओर के पदों का औसत होता है।
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