यदि \(a_1=4\) और \(a_{n+1}=a_n+7n-2\) है तो \(a_4\) क्या होगा?
If \(a_1=4\) and \(a_{n+1}=a_n+7n-2\), what is \(a_4\)?
Explanation opens after your attempt
C. (38)
Concept
The added values are (5,12,19), so \(a_4=40\). The correct option should include (40).
Why this answer is correct
The correct answer is C. (38). The added values are (5,12,19), so \(a_4=40\). The correct option should include (40).
Exam Tip
जुड़ने वाले मान (5,12,19) हैं इसलिए \(a_4=40\) नहीं बल्कि (40) है। सही विकल्प में (40) होना चाहिए।
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