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

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If C is the middle point of AB and P is any point outside AB, then
A. PA+PB=PC
B. PA+PB=2PC
C. PA+PB+PC=0
D. PA+PB+2PC=0
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Correct Answer - B
`PA+PB=(PA+AC)+(PB+BC)-(AC+BC)`
`=PC+PC-(AC-CB)=2PC-0" "(becauseAC=CB)`
image
`thereforePA+PB=2PC`
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