1.

If OABC, OCDE, OEFA are adjacent faces of a cube OABCDEF then bar(OB)+bar(OD)+bar(OF) interms of bar(OA), bar(OE), bar(OC) is

Answer»

`2(BAR(OA)+bar(OC)+bar(OE))`
`2(bar(OA)+bar(OB)+bar(OC))`
`2(bar(OA)-bar(OC)+bar(OE))`
`bar(OA)-bar(OC)-bar(OE)`

ANSWER :A


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