There are 8 guests in a party. Each guest bring a gift and receives another gift in return . No one is allowed to receive the gift they bought. How many ways are there to distribute the gifts?
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Answer:
Water is an essential part of life and vital for sustainability. … Water is everywhere, and it is vital for our Earth and the life that lives there. Water does not produce calories and is a significant weight loss factor. The quality of our lives is the key component and a universal solvent.12-Jun-2020
Answer:
Water is an essential part of life and vital for sustainability. … Water is everywhere, and it is vital for our Earth and the life that lives there. Water does not produce calories and is a significant weight loss factor. The quality of our lives is the key component and a universal solvent.12-Jun-2020