Major Competitive Exams

Download Q&A
Q. If z = 3 + 4i, what is the value of |z|^2? (2019)
  • A. 25
  • B. 7
  • C. 12
  • D. 16
Q. If z = 3 + 4i, what is |z|?
  • A. 5
  • B. 7
  • C. 4
  • D. 3
Q. If z = 4 + 3i, what is the real part of z? (2023)
  • A. 4
  • B. 3
  • C. 7
  • D. 1
Q. If z = 4 - 3i, find the conjugate of z. (2023)
  • A. 4 + 3i
  • B. 4 - 3i
  • C. -4 + 3i
  • D. -4 - 3i
Q. If z = 4e^(iπ/3), find the rectangular form of z.
  • A. 2 + 2√3i
  • B. 4 + 0i
  • C. 0 + 4i
  • D. 4 + 4i
Q. If z = 5 + 12i, find the argument of z. (2020)
  • A. arctan(12/5)
  • B. arctan(5/12)
  • C. π/2
  • D. 0
Q. If z = 5 + 12i, what is the argument of z? (2022)
  • A. arctan(12/5)
  • B. arctan(5/12)
  • C. π/2
  • D. 0
Q. If z = 5 + 12i, what is the imaginary part of z? (2022)
  • A. 5
  • B. 12
  • C. 17
  • D. 0
Q. If z = 5(cos(θ) + i sin(θ)), what is the value of z when θ = π/3? (2023)
  • A. 5 + 5i
  • B. 5 + 2.5i
  • C. 2.5 + 5i
  • D. 2.5 + 2.5i
Q. If z = a + bi is a complex number such that |z| = 10, what is the equation relating a and b?
  • A. a^2 + b^2 = 100
  • B. a^2 + b^2 = 10
  • C. a^2 - b^2 = 100
  • D. a^2 + b = 10
Q. If z = a + bi, what is the conjugate of z?
  • A. a - bi
  • B. a + bi
  • C. -a + bi
  • D. -a - bi
Q. If z = a + bi, where a and b are real numbers, then the conjugate of z is?
  • A. a + bi
  • B. a - bi
  • C. -a + bi
  • D. -a - bi
Q. If z = a + bi, where a and b are real numbers, what is the conjugate of z?
  • A. a - bi
  • B. a + bi
  • C. -a + bi
  • D. -a - bi
Q. If z = cos(θ) + i sin(θ), what is z^4?
  • A. cos(4θ) + i sin(4θ)
  • B. cos(2θ) + i sin(2θ)
  • C. cos(3θ) + i sin(3θ)
  • D. cos(θ) + i sin(θ)
Q. If z = e^(iπ/4), find the value of z^8.
  • A. 1
  • B. 0
  • C. -1
  • D. i
Q. If z = re^(iθ), then the value of |z| is?
  • A. r
  • B. θ
  • C. re
  • D. 1
Q. If z = re^(iθ), what is the value of r if z = 1 + i?
  • A. √2
  • B. 1
  • C. 2
  • D. 0
Q. If z = re^(iθ), what is the value of r if z = 3 + 4i?
  • A. 5
  • B. 7
  • C. 4
  • D. 3
Q. If z = re^(iθ), what is the value of r if z = 4 + 3i?
  • A. 5
  • B. 7
  • C. 4
  • D. 3
Q. If z = re^(iθ), what is the value of r if z = 4 + 4i?
  • A. 4√2
  • B. 8
  • C. 4
  • D. 2√2
Q. If z = re^(iθ), what is the value of z^2?
  • A. r^2e^(i2θ)
  • B. re^(iθ)
  • C. 2re^(iθ)
  • D. r^2e^(iθ)
Q. If z = re^(iθ), what is the value of z^3?
  • A. r^3 e^(i3θ)
  • B. r^3 e^(iθ)
  • C. 3re^(iθ)
  • D. r^3 e^(iθ^3)
Q. If z = re^(iθ), what is the value of |z|?
  • A. r
  • B. θ
  • C. re
  • D. 1
Q. If z = x + yi is a complex number such that |z| = 10, what is the equation of the circle in the complex plane?
  • A. x^2 + y^2 = 100
  • B. x^2 + y^2 = 10
  • C. x^2 + y^2 = 50
  • D. x^2 + y^2 = 25
Q. If z = x + yi, find the real part of z^3.
  • A. x^3 - 3xy^2
  • B. 3x^2y - y^3
  • C. x^3 + 3xy^2
  • D. 3x^2 - y^3
Q. If Z is seated between A and B, and C is seated to the left of A, who is sitting to the right of B?
  • A. Z
  • B. C
  • C. None
  • D. A
Q. If z1 = 1 + i and z2 = 1 - i, find z1 * z2.
  • A. 2
  • B. 0
  • C. 1
  • D. -1
Q. If z1 = 1 + i and z2 = 2 - 3i, find z1 * z2.
  • A. 7 - i
  • B. 7 + i
  • C. 5 - i
  • D. 5 + i
Q. If z1 = 1 + i and z2 = 2 - 3i, what is z1 * z2?
  • A. 5 - i
  • B. 8 - i
  • C. 7 + i
  • D. 1 + 5i
Q. If z1 = 1 + i and z2 = 2 - i, find z1 * z2.
  • A. 3 + i
  • B. 3 - i
  • C. 2 + 3i
  • D. 2 - 3i
Showing 12241 to 12270 of 30778 (1026 Pages)
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely