1.

If C is the mid point of AB and P is any point outside AB, then

Answer»

`bar(PA)+bar(PB)+bar(PC)=bar(0)`
`bar(PA)+bar(PB)+2bar(PC)=bar(0)`
`bar(PA)+bar(PB)=bar(PC)`
`bar(PA)+bar(PB)=2bar(PC)`

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