depends on what province you are in.

In Ontario if you are private you can only have 5 kids no matter how many adults there are.
If you are licensed through an agency you can have only 6 kids no matter how many adults there are.

In Ontario; Private: no more then 5 daycare child between the ages of new born to 13yrs. Out of those 5 children no more then 2 children between the ages of new born to 23month. A providers own children 6yrs and older don't count in a providers numbers. A providers own children new born to 5yrs count in the providers numbers. There is an exception for a providers own children who are 4yrs and 5 yrs old and in a full time school program (publicly funded school only) and the provider only has one child between the ages of newborn and 23months in her care.

You can get more information on the Ontario Ministry of Education website.