you are planning a wedding, and there are 10 people participating in the wedding ceremony. 1. During the ceremony, the 10 participants will walk down the aisle in pairs (groups of 2), one pair at a time. How many ways can the 10 participants walk down the aisle in pairs if it matters which person is on the left and which is on the right? 2. After walking down the aisle and completing the wedding ceremony, the 10 parti- cipants will leave the ceremony in pairs. How many ways can the 10 people leave the ceremony in pairs, one pair at a time, if the left and right orientation of each pair is now irrelevant? 3. After leaving the ceremony there is a reception held where the 10 wedding parti- cipants will dance together. How many ways can the 10 participants form pairs while dancing at the same time?
you are planning a wedding, and there are 10 people participating in the wedding
ceremony.
1. During the ceremony, the 10 participants will walk down the aisle in pairs (groups
of 2), one pair at a time. How many ways can the 10 participants walk down the
aisle in pairs if it matters which person is on the left and which is on the right?
2. After walking down the aisle and completing the wedding ceremony, the 10 parti-
cipants will leave the ceremony in pairs. How many ways can the 10 people leave
the ceremony in pairs, one pair at a time, if the left and right orientation of each
pair is now irrelevant?
3. After leaving the ceremony there is a reception held where the 10 wedding parti-
cipants will dance together. How many ways can the 10 participants form pairs
while dancing at the same time?
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