Question: What do the square brackets mean in the following function specification? = AVERAGE ( number 1 , [ number 2 ] , [ number 3
What do the square brackets mean in the following function specification? AVERAGEnumbernumbernumber
only number is required, the others are optional
square brackets are required around arguments after the first one
a range can be specified as the argument for this function
any number of numeric arguments can be input into this function
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