Answer :

lilymannering

Answer:

There is one way, 5 groups of 2.

Step-by-step explanation:

If there is 10 people and there has to be 5 pairs, divide 10 by 5. this is 2. This is the only way that it can be split evenly.

semsee45

Answer:

945

Step-by-step explanation:

10! / (2^5 x 5!) = 3628800 / (32 x 120) = 3628800 / 3840 = 945

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