अनुक्रम \(3,8,15,24,\ldots\) में (n)वाँ पद \(a_n=n^2+2n\) है। दसवाँ पद क्या होगा?
In the sequence \(3,8,15,24,\ldots\), the (n)th term is \(a_n=n^2+2n\). What is the tenth term?
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Correct Answer
C. (120)
Concept
\(a_{10}=10^2+2\times10=120\), so the correct answer is (120). Exam tip: substitute the given position directly for (n).
Why this answer is correct
The correct answer is C. (120). \(a_{10}=10^2+2\times10=120\), so the correct answer is (120). Exam tip: substitute the given position directly for (n).
Exam Tip
\(a_{10}=10^2+2\times10=120\) इसलिए सही उत्तर (120) है। परीक्षा में (n) की जगह सीधे दिया गया क्रमांक रखें।
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