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Question 1
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If
a, b, c
are three non-zero vectors with no two of which are collinear,
a + 2b
is collinear with
c
and
b + 3c
is collinear with
a
, then
| a + 2b + 6c |
will be equal to
A.
0
B.
9
C.
1
D.
None of these
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