Hong kong visa and macau

I have two questions about HK and macau?
I am egyptian, i will visit china in july and have only one entry permit, after visiting there can i enter HK without an entry permit and then back to egypt?
Second, after staying in HK 6 days, i want to stay in macau three days, but my plan to egypt is from HK airport, so can i enter again HK, is HK entry permit with double entry?