# Mystery of balls........

$$3$$ identical $$\textbf{black}$$ balls, $$4$$ identical $$\color{Red}{\textbf{red}}$$ balls and $$5$$ identical $$\color{Blue}{\textbf{blue}}$$ balls are to be arranged in a row. Find the number of ways that can be done if all the balls with the same colour do not form a single block.

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