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Q.

If z1 , z2  are two complex numbers satisfying z13z23z1z2¯=1 , |z1|3 , then |z2|  is equal to:

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a

4

b

2

c

3

d

1

answer is A.

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Detailed Solution

z1-3z2=3-z1z2¯  squaring on both sides  1-z22z12-9=0z2=1

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