1.

Answer these questions independently of each other. In how many ways can 12 soldiers stand in two queue such that each queue has 6 soldiers?

Answer»

`^12P_6xx^12P_6xx2!`
`^12P_6xx^6P_6`
`6!xx6!xx2!`
`^12P_6xx6!xx2!`

ANSWER :D


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