If `z=|-5 3+4i5-7i3-4i6 8+7i5+7i8-7i9|,t h e nz` is purely real purely imaginary `a+i b ,w h e r ea!=0,b!=0` d. `a+i b ,w h e r eb=4`

If z=|(-5,3+4i,5-7i),(3-4i,6,8+7i),(5+7i,8-7i,9)| then z is a)Purely real b)Purely imaginary c)a + ib where a!=0, b != 0 d)a + ib, where b = 4

If z=|[-5, 3+4i,5-7i],[3-4i,6 ,8+7i],[5+7i,8-7i,9]|,t h e nz is (a) purely real (b)purely imaginary (c)an imaginary number that is not purely imaginary,a+i b , w h e r ea!=0,b!=0 (d)both purely real and purely imaginary

If z=|[-5, 3+4i,5-7i],[3-4i,6 ,8+7i],[5+7i,8-7i,9]|,t h e nz is (a) purely real (b)purely imaginary (c)an imaginary number that is not purely imaginary,a+i b , w h e r ea!=0,b!=0 (d)both purely real and purely imaginary

If z = |{:(-5,3+4i,5-7i),(3-4i,6,8+7i),(5+7i,8-7i,9):}| , then z is

Which term of the sequence 8-6i,7-4i,6-2i,...... is (i) purely real (ii) purely imaginary?

If z=|(1+i, 5+2i, 3-2i),(7i, -3i, 5i),(1-i, 5-2i, 3+2i)| then (A) z is purely real imaginary (B) z is purely real (C) z has equal real and imaginary parts (D) z has positive real and imaginary parts.

Which term of the sequence 8-6i ,7-4i ,6-2i ,..... is (i) purely real (ii) purely imaginary?

Which term of the sequence 12+8i,11+6i,10+4i,cdots is a purely real b.purely imaginary?

If z = (3+ 7i) (a +ib) where a, b in in Z- {0} , is purely imaginary , then the minimum value of |z| is

If w=(z+4i)/(z+2i) is purely imaginary then find |z+3i|.