A bag contains many balls, each with a number painted on it. There are exactly balls which have the number (namely one ball with 1, two balls with 2, and so on until N balls with Non them). An experiment consists of choosing a ball at random, noting the number on it and returning it to the bag. If the experiment is repeated a large number of times, the average value of the number will tend to
1
\(\frac{2N+1}{3}\)
2
\(\frac{N}{2}\)
3
\(\frac{N+1}{2}\)
4
\(\frac{N(N+1)}{2}\)