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If vector a , b , c are three non-zero vectors, no two of which are collinear, vector a + 2b is collinear with c and b + 3 c is

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If vector a , b , c are three non-zero vectors, no two of which are collinear, vector a + 2b  is collinear with c and b + 3 c  is collinear with a  , then vector |a + 2b + 6c| is equal to

(a)  0

(b)   1

(c)   9

(d)  None of these

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Correct option  (a) 0

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