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If bara,barb,barc are three non-coplanar...

If `bara,barb,barc` are three non-coplanar vectors and `barp,barq,barr` are defined by the relations `barp=(barbxxbarc)/(bara barb barc),barq=(barcxxbara)/(bara barb barc),barr=(baraxxbarb)/(bara barb barc)` then `(bara+barb).barp+(barb+barc).barq+(barc+bara).barr=`

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D

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The correct Answer is:
D
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TARGET PUBLICATION-VECTORS-Competitive Thinking
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