यदि किसी समांतर श्रेणी में (a=7) और (d=5) है, तो पाँचवाँ पद क्या होगा?
If an arithmetic progression has (a=7) and (d=5), what is the fifth term?
Explanation opens after your attempt
C. (27)
Concept
\(a_5=7+4\times5=27\). In exams, put (n=5) in (a_n=a+(n-1)d).
Why this answer is correct
The correct answer is C. (27). \(a_5=7+4\times5=27\). In exams, put (n=5) in (a_n=a+(n-1)d).
Exam Tip
\(a_5=7+4\times5=27\) है। परीक्षा में (a_n=a+(n-1)d) में (n=5) रखें।
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