यदि \(a_n=4\cdot5^{n-1}\) है, तो \(a_4+a_5\) का मान क्या है?
If \(a_n=4\cdot5^{n-1}\), what is the value of \(a_4+a_5\)?
Explanation opens after your attempt
B. (3000)
Concept
\(a_4=500\) and \(a_5=2500\), so the sum is (3000). In exams, find both terms separately and add.
Why this answer is correct
The correct answer is B. (3000). \(a_4=500\) and \(a_5=2500\), so the sum is (3000). In exams, find both terms separately and add.
Exam Tip
\(a_4=500\) और \(a_5=2500\), इसलिए योग (3000) है। परीक्षा में दोनों पद अलग निकालकर जोड़ें।
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