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Question Number 150324 by lapache last updated on 11/Aug/21

$$Calculdessommes$$$$A-\underset{p=0}{\sum ^{\alpha }}{C}_n^{2p}=.....avec\alpha =E\left(\frac{n}{2}\right)$$$$B-\underset{p=0}{\sum ^{\beta }}{C}_n^{2p+1}=.....avec\beta =E\left(\frac{n-1}{2}\right)$$

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