Questions on Practice Exam Q6
Hi, I am not sure why the equation of Combination with repetition was = (n+p-1)! / p! NOT =(n+p-1)! / p! (n-1)! as stated in the lecture and PPT. Kindly explain. Thanks.
Thank you for your question!
Could you please let us know where you find the inconsistency? In the video lecture, on timestamp 6:43 - 7:07, I can see the correct formula being used, namely:
Please, let me know if you encounter any mistakes.
Thanks, Hristina for the clarification.
The answer to Q6 of practice exam used a slightly different formula for combination with repetition (attached below).
Thank you for your reply!
Please, refer to this thread, where this is discussed and resolved :)