Let `z_1 epsilon A and z_2 epsilon B` then the value of `|z_1-z_2|` necessarily lies between (A) 3 and 15 (B) 0 and 22 (C) 2 and 22 (D) 4 and 14

Let z_(1) lies on |z|=1 and z_(2) lies on |z|=2 then maximum value of |z_(1)+z_(2)| is

If z epsilon C , the minimum value of |z| + |z-i| is attained at

For all complex numbers z_1,z_2 satisfying |z_1|=12 and |z_2-3-4i|=5 the minimum value of |z_1-z_2| is (A) 0 (B) 2 (C) 7 (D) 17

If z_1 and z_2 are complex numbers such that |z_1-z_2|=|z_1+z_2| and A and B re the points representing z_1 and z_2 then the orthocentre of /_\OAB, where O is the origin is (A) (z_1+z_2)/2 (B) 0 (C) (z_1-z_2)/2 (D) none of these

Let z_1 and z_2 be theroots of the equation z^2+az+b=0 z being complex. Further, assume that the origin z_1 and z_2 form an equilateral triangle then (A) a^2=4b (B) a^2=b (C) a^2=2b (D) a^2=3b

If A={x:x=3n,n epsilon Z} and B={x:x=4n,n epsilon Z} , then find A nn B .

Let z_1 and z_2 be two complex numbers satisfying |z_1|=9 and |z_2-3-4i|=4 Then the minimum value of |z_1-Z_2| is

for any complex nuber z maximum value of |z|-|z-1| is (A) 0 (B) 1/2 (C) 1 (D) 3/2

If z_(1) and z_(2) lies on |z|=9 and |z-3-4i|=4 respectively,find minimum possible value of |z_(1)-z_(2)|( A) 0(B)5(C)13 (D) 2

If A={x:x=3n,n epsilon Z} and B={x:x=4n,n epsilon Z} , then find ( A nn B ).