There are 4 balls inside or outside a pouch.
How many different ways can they be inside or outside the pouch?
Ways to be inside or outside the pouch are:
Inside |
Outside |
0 |
4 |
1 |
3 |
2 |
2 |
3 |
1 |
4 |
0 |
Number of different ways to be inside or outside the pouch = 5
Answer(s): 5