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If z1=1+i,z2=-2+3i and z3=(ai)/3, where ...

If `z_1=1+i,z_2=-2+3i` and `z_3=(ai)/3`, where `i^2=-1` are collinear, then the value of a is

A

`-1`

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
D
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