# Solution to Exercise 2.1-1"Find the Mistake"

| The binomial coefficient in Hayes and Stoneham is written as
PL | = | N! (N – n)!
--- | --- | ---
| The correct formula, of course, is
PL | = | N! (N – n)! · n!
--- | --- | ---
| This is obviously a typo, otherwise one set of brackets would not have been necessary.
|  | The final result is correct anyway, because the next equation (3.5) contains the complete formula.

With frame

Find the Mistake

Solution to Exercise 1.1

© H. Föll (Defects - Script)