1.

If bara.(barb+barc) = barb.(barc+bara) = barc.(bara+barb) =0 and absbara = 3, absbarb = 4, absbarc = 5 , " then " abs(bara+barb+barc)=

Answer»

5
`5sqrt2`
`5/SQRT2`
`sqrt2`

ANSWER :B


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