title: Generate numbers from normal distribution
body: <p>I know that if I want to generate for example 120 numbers from normal distribution with mean 30 and standard deviation 20 i can do it by command : </p>
  
  <pre><code>x=rnorm(120,30,20) 
  </code></pre>
  
  <p>But what if I want to generate 100 times 120 numbers from above normal distribution ?</p>
  
  <p>Do we have in R any function to do this directly ?</p>