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sequence mathematics MCQ Questions for Class 10

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1 questions tagged with sequence mathematics.

किसी समांतर श्रेणी में \(a_3-a_1=14\) है। सामान्य अंतर क्या है?

In an AP, \(a_3-a_1=14\). What is the common difference?

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Correct Answer

D. 7

Explanation

Simple Explanation

समांतर श्रेणी में \(a_3=a_1+2d\) होता है। अतः \(a_3-a_1=2d=14\), इसलिए \(d=7\)। \(-7\) तब होता यदि दिया गया अंतर \(-14\) होता। परीक्षा टिप: \(a_m-a_n=(m-n)d\) में पदों के क्रमांकों का अंतर अवश्य गिनें। / In an AP, \(a_3=a_1+2d\). Therefore, \(a_3-a_1=2d=14\), so \(d=7\). The value \(-7\) would apply only if the given difference were \(-14\). Exam tip: use \(a_m-a_n=(m-n)d\) and carefully count the difference between the term numbers.

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