Yancey can arrange his banks on a shelf in six (6) different ways.
They are:
P C H P H C C P H C H P H P C H C P
Yancey can arrange his three banks in 6 different ways. This is calculated using the permutation formula, which in this case is 3! = 6. The possible arrangements include Pig-Cow-Horse, Pig-Horse-Cow, Cow-Pig-Horse, Cow-Horse-Pig, Horse-Pig-Cow, and Horse-Cow-Pig.
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