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MHT CET · Maths · Limits

The value of \(\lim _{x \rightarrow \infty} \frac{1+2+3 \ldots+n}{n^{2}}\) is

  1. A 1
  2. B \(\frac{1}{2}\)
  3. C 0
  4. D \(\frac{3}{2}\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\frac{1}{2}\)

Step-by-step Solution

Detailed explanation

\(\lim _{n \rightarrow \infty} \frac{1+2+3+\ldots+n}{n^{2}}=\lim _{n \rightarrow \infty} \frac{n(n+1)}{2 n^{2}}\)
\(=\lim _{n \rightarrow \infty} \frac{\left(1+\frac{1}{n}\right)}{2}=\frac{1}{2}\)