The mode of the following discrete series is: xi13561215fi573865

# The mode of the following discrete series is: $\begin{array}{ccccccc}{x}_{i}& 1& 3& 5& 6& 12& 15\\ {f}_{i}& 5& 7& 3& 8& 6& 5\end{array}$

1. A

3

2. B

12

3. C

8

4. D

6

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