title: Not sure about R's dbinom()
body: <p>I am looking to use <code>dbinom()</code> in R to generate a probability. The default documentation gives <code>dbinom(x, size, prob, log = FALSE)</code>, and I understand what they all mean except the x, where x is said to be "vector of quantiles". Can anyone explain what that means in context of let's say that I would like to find the probability of obtaining the number 5 twice if I sample 10 times from the numbers 1-5. In this case the binomial probability would be </p>
  
  <pre><code>choose(10, 2) * (1/5)^2 * (4/5)^8
  </code></pre>