A salad bar offers 8 choices of toppings for lettuce. In how many ways can you choose 4 or 5 toppings? ...?
combinations
8C4 + 8C5
= 8765 876
------- + ----
4321 321
= 70 + 56 = 126
The solution to the problem is as folllows:
combinations
8C4 + 8C5
= 8765 876
4321 321
=
70 + 56
= 126
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