Combination and permutation: How to calculate the total number of 5 digits numbers that contains 3 and 6?
- Thread starter bbb153
- Start date
pka
Elite Member
- Joined
- Jan 29, 2005
- Messages
- 11,971
Have you read the posting guidelines? You need to show us some effort on your part.
We cannot help if we do not where you are confused. Please tell us.
Dr.Peterson
Elite Member
- Joined
- Nov 12, 2017
- Messages
- 16,060
A good way to start is to count the number of 5-digit numbers that do not contain either a 3 or a 6. That's a much easier question.
Show us your work, and we can guide you further.