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A collection view has a data source and a delegate. Collection View asks the data source three questions. Which one is not one of the

A collection view has a data source and a delegate. Collection View asks the data source three questions. Which one is not one of the tree questions?

1 .

numberOfSections

(

in:

)

2 .

numberofCells

(

in:

)

3 .

collectionView

(_

:numberOfItemsInSection:

)

4 .

collectionView

(_

:cellForItemAt:

)

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