The number of distinct terms in the expansion of $(x + y + z)^{10}$ is:
Step-by-Step Solution
Key Concept: Each term corresponds to a choice of non-negative integers $a, b, c$ with $a + b + c = 10$ — count the number of such solutions using the standard stars-and-bars formula $\binom{n+k-1}{k-1}$.
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Correct Answer: (2)