1.

If overline(a)=hat(i)+hat(j), overline(b)=hat(j)+hat(k), overline(c)=alphaoverline(a)+betaoverline(b) and the vectors hat(i)-2hat(j)+hat(k), 3hat(i)+2hat(j)-hat(k), overline(c) are coplanar, then (alpha)/(beta)=

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`0`
`-2`
`-3`
`-1`

ANSWER :C


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