एक समान्तर श्रेणी में प्रथम पद (6) है और \(S_{12}=4S_6\) है। सार्व अंतर क्या होगा?
In an arithmetic progression the first term is (6) and \(S_{12}=4S_6\). What is the common difference?
Explanation opens after your attempt
C. (12)
Concept
From (6(12+11d)=4\cdot3(12+5d)), (d=12). Exam tip: write both sums separately and then compare.
Why this answer is correct
The correct answer is C. (12). From (6(12+11d)=4\cdot3(12+5d)), (d=12). Exam tip: write both sums separately and then compare.
Exam Tip
(6(12+11d)=4\cdot3(12+5d)) से (d=12) मिलता है। परीक्षा में दोनों योग अलग-अलग लिखकर तुलना करें।
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