Q47. Which of the following statements is always true for a complex number z, where z* denotes the complex conjugate of z?Mathematics — NUST Mock 10 — Question 47 of 200A. z + z* is a real numberB. z - z* is a real numberC. z × z* is an imaginary numberD. z / z* is a real numberPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →