It should be double

I have a biased coin, which means that the probability of getting heads is not equal to the probability of getting tails.

If the probability of getting \(2\) heads and \(1\) tail in \(3\) tosses is \(\dfrac{1}{6}\), then what is the probability of getting \(4\) heads and \(2\) tails in \(6\) tosses?

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