यदि \(a_n=5n^2-2\) है, तो \(a_3\) क्या होगा?
If \(a_n=5n^2-2\), what is \(a_3\)?
Explanation opens after your attempt
B. (43)
Concept
(a_3=5(3)2-2=43). First square, then multiply and subtract.
Why this answer is correct
The correct answer is B. (43). (a_3=5(3)2-2=43). First square, then multiply and subtract.
Exam Tip
(a_3=5(3)2-2=43)। पहले वर्ग करें फिर गुणा और घटाव करें।
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