This article contains all important concepts, formulae and some important solved questions of chapter Complex Numbers. This will help all UPSEE aspirants to score good marks in the coming UPSEE examination. About **2-4** questions are asked from this chapter in UPSEE examination. This can be used as a quick revision material for UPSEE entrance examination. You will have to do a lot of practice to master this topic as this is not an easy topic.

**About the Exam:**

Uttar Pradesh State Entrance Examination (UPSEE) is a state level engineering entrance examination for degree level engineering institutions and other professional colleges. It is regulated by Dr. A.P.J. Abdul Kalam Technical University (AKTU) formerly known as Uttar Pradesh Technical University (UPTU).

**Definition:** A complex number is a number that can be written in form **x + iy**, where x and y are real numbers and *i* is an imaginary part.

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**Some important concepts and formulae are given below:**

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**Some important solved questions are given below:**

**Question 1:**

**Solution 1:**

Hence, the correct option is (d).

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**Question 2:**

**Solution 2:**

Hence, the correct option is (b).

**Question 3:**

**Solution 3:**

Hence, the correct option is (c).

**Question 4:**

**Solution 4:**

Hence, the correct option is (b).

**Question 5:**

**Solution 5:**

Hence, the correct option is (c).

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