Chocolates

In the market we have 3 kinds of chocolates.

How many ways can we buy 14 chocolates?

Correct answer:

n =  120

Step-by-step explanation:

$n=C_{14}^{\mathrm{\prime }3}=C_{14}(16)=\left({\displaystyle \genfrac{}{}{0px}{}{16}{14}}\right)={\displaystyle \frac{16!}{14!(16-14)!}}={\displaystyle \frac{16\cdot 15}{2\cdot 1}}=120$

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