Hi guys, need help with this question:

In how many ways can a committee of 5 be formed from a group of 8 people consisting of 3 boys, 3 girls and a brother-sister pair if

(i) the committee must include the brother-sister pair?

(ii) one girl A refuses to serve in the same committee with a particular boy?

(i) No. of ways (for remaining 3 ppl) = 6C3 * 3!

I am not sure how to include the brother-sister pair, is it just mutiply the above by (1 * 2!) ?