Why Does Using + with Strings in Ruby Give an Undefined Method Error?

Why Does Using + with Strings in Ruby Give an Undefined Method Error?

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How to Resolve undefined method '**' Error in Your Ruby Array Function
How to Resolve undefined method '**' Error in Your Ruby Array Function
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How to Resolve undefined method '**' Error in Your Ruby Array Function

How to Resolve undefined method '**' Error in Your Ruby Array Function
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