यदि \(a_1=3\), \(a_2=7\) और \(a_n=3a_{n-1}-2a_{n-2}\) है तो \(a_5\) क्या होगा?
If \(a_1=3\), \(a_2=7\), and \(a_n=3a_{n-1}-2a_{n-2}\), what is \(a_5\)?
Explanation opens after your attempt
C. (63)
Concept
The terms are (3,7,15,31,63), so \(a_5=63\). Exam tip: do not change the order of multiplication and subtraction.
Why this answer is correct
The correct answer is C. (63). The terms are (3,7,15,31,63), so \(a_5=63\). Exam tip: do not change the order of multiplication and subtraction.
Exam Tip
पद (3,7,15,31,63) हैं इसलिए \(a_5=63\) है। गुणा और घटाव का क्रम न बदलें।
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