Combination Calculation 475C39
1. **State the problem:**
Calculate the combination formula given by $$\frac{(n+r-1)!}{r!(n-1)!}$$ for the values $n=35$ and $r=10$.
2. **Formula used:**
The formula for combinations with repetition is:
$$C(n+r-1, r) = \frac{(n+r-1)!}{r!(n-1)!}$$
This formula counts the number of ways to choose $r$ elements from $n$ types with repetition allowed.
3. **Substitute the values:**
$$\frac{(35+10-1)!}{10!(35-1)!} = \frac{44!}{10! \times 34!}$$
4. **Simplify the factorial expression:**
Expand the numerator from $44!$ down to $35!$ to cancel with the denominator $34!$:
$$\frac{44 \times 43 \times 42 \times 41 \times 40 \times 39 \times 38 \times 37 \times 36 \times 35 \times 34!}{10! \times 34!} = \frac{44 \times 43 \times 42 \times 41 \times 40 \times 39 \times 38 \times 37 \times 36 \times 35}{10!}$$
5. **Calculate the denominator:**
$$10! = 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 = 3628800$$
6. **Calculate the numerator:**
Multiply the numbers:
$$44 \times 43 \times 42 \times 41 \times 40 \times 39 \times 38 \times 37 \times 36 \times 35 = 472972032000$$
7. **Divide numerator by denominator:**
$$\frac{472972032000}{3628800} = 13032096$$
**Final answer:**
$$\boxed{13032096}$$