यदि \(a_1=4\) और \(a_{n+1}=2a_n+7\) है तो \(a_4-a_2\) का मान क्या होगा?
If \(a_1=4\) and \(a_{n+1}=2a_n+7\), what is the value of \(a_4-a_2\)?
Explanation opens after your attempt
C. (70)
Concept
The terms are (4,15,37,81), so \(a_4-a_2=66\). Exam tip: find both terms first and subtract.
Why this answer is correct
The correct answer is C. (70). The terms are (4,15,37,81), so \(a_4-a_2=66\). Exam tip: find both terms first and subtract.
Exam Tip
पद (4,15,37,81) हैं इसलिए \(a_4-a_2=66\) है। सही विकल्पों में (66) होना चाहिए।
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