Well i figured them out so i'll post my answers in case anyone else was having trouble.
1. because there are only two options (b/y) you could rewrite that as blue and notblue. Then, because there are only 3 blues maximum, you just work out:
(no of combinations using 1b) + (no of combs using...
Hi guys. i have no idea how to do these two questions.
1. There are three identical blue marbles and four identical yellow arranged in a row. How mand different arrangements of 5 marbles are possible?
2. Containers are coded by different arrangements of coloured dots in a row. The colours...