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A salad bar offers nine choices of toppings for lettuce and how many ways can you choose five toppin...
4 months ago
Q:
a salad bar offers nine choices of toppings for lettuce and how many ways can you choose five toppings126302415120362880
Accepted Solution
A:
[tex] \displaystyle
\binom{9}{5}=\dfrac{9!}{5!4!}=\dfrac{6\cdot7\cdot8\cdot9}{2\cdot3\cdot4}=126 [/tex]