1.

If nobjects arearrange in a row, then the number of ways of selecting three of these objectsso that no two of them are next to each other isa. ^n-2C_3b. ^n-3C_2 c.^n-3C_3d. none of these

Answer»

`^nC_3`
`^(n-2)C_3`
`^nC_2`
NONE of these

Answer :B


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