Answer: 39
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Step-by-step explanation:
You can use the nCr formula shown below
![_n C _r = (n!)/(r!*(n-r)!)](https://img.qammunity.org/2022/formulas/mathematics/college/jtgjnhvvjgngfoch820d4d7525en51nas6.png)
where n = 39 and r = 1. However, you could also use the identity
![_n C _(1) = n](https://img.qammunity.org/2022/formulas/mathematics/college/9g1qa09wzxn4cm84of09rnjo4zs1w3yay3.png)
which basically says there are n ways to pick 1 item if you are given a choice of n items. In this specific case, we have 39 items total, and there are 39 ways to pick one item.