# WBJEE: Important Questions and Preparation Tips - Complex Numbers

West Bengal Joint Entrance Examination (WBJEE) is a state level common entrance test organized by West Bengal Joint Entrance Examinations Board for admission to the Undergraduate Level Engineering and Medical Courses through a common entrance test in the State of West Bengal. This article contains all important concepts, formulae and some important solved questions of chapter Complex Numbers. This can be used as a quick revision material for WBJEE entrance examination. This is not an easy topic. You need to do a lot of practice to master this topic. About **3-5** questions are asked from this chapter in WBJEE examination.

**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.

**WBJEE 2017: Syllabus-Mathematics**

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

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**JEE Advanced 2017 Question Papers: Paper 1 and Paper 2**

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

**Question 1:**

**Solution 1:**

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Hence, the correct option is (b).

**JEE Main-2017: Important topics & books**

**Question 2:**

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**Solution 2:**

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Hence, the correct option is (a).

**Question 3:**

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**Solution 3:**

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Hence, the correct option is (c).

**JEE Advanced-2017: Topper's Interview - Akshat Chugh (AIR-2)**

**Question 4:**

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**Solution 4:**

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Hence, the correct option is (d).

**Question 5:**

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**Solution 5:**

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Hence, the correct option is (b).

**WBJEE Online Test: Chemistry - Haloalkanes and Haloarenes**

**UPSEE Solved Question Paper: 2015**