यदि \(a_1=60\) और \(a_{n+1}=a_n-\frac{5n}{2}\) है तो \(a_5\) क्या होगा?
If \(a_1=60\) and \(a_{n+1}=a_n-\frac{5n}{2}\), what is \(a_5\)?
Explanation opens after your attempt
C. (35)
Concept
The total subtraction is (\frac{5(1+2+3+4)}{2}=25), so \(a_5=35\). Exam tip: add the fractional subtractions first.
Why this answer is correct
The correct answer is C. (35). The total subtraction is (\frac{5(1+2+3+4)}{2}=25), so \(a_5=35\). Exam tip: add the fractional subtractions first.
Exam Tip
कुल घटाव (\frac{5(1+2+3+4)}{2}=25) है इसलिए \(a_5=35\) है। भिन्न घटाव को पहले जोड़ें।
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