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Question Number 1775 by lakshaysethi039 last updated on 26/Sep/15
7 couples are there in a society. The selection of   pairs are to be done for a mixed double badminton  tournament. In how many ways we can choose   these pairs?
$$\mathrm{7}\:{couples}\:{are}\:{there}\:{in}\:{a}\:{society}.\:{The}\:{selection}\:{of} \\ $$$$\:{pairs}\:{are}\:{to}\:{be}\:{done}\:{for}\:{a}\:{mixed}\:{double}\:{badminton} \\ $$$${tournament}.\:{In}\:{how}\:{many}\:{ways}\:{we}\:{can}\:{choose} \\ $$$$\:{these}\:{pairs}? \\ $$

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