1.

If vec(a)= 2vec(i) -vec(j) + 3vec(k), vec(b)= p vec(i) + vec(j) + q vec(k) and vec(b) xx vec(a) = vec(0), then

Answer»

(p, q)= (2, 3)
(p, q)= `(-2, -3)`
(p, q)= (1, 2)
(p, q)= `(-1, -2)`

ANSWER :B


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