WBJEE SERIES Mathematics
Combinations
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
2
2022 1
2019 1
2012 Chapter Questions 4 MCQs
01
PYQ 2012
medium
mathematics ID: wbjee-20
The number of diagonals in a regular polygon of sides is
1
4950
2
4850
3
4750
4
4650
02
PYQ 2019
medium
mathematics ID: wbjee-20
A candidate is required to answer 6 out of 12 questions which are divided into two parts A and B, each containing 6 questions and he/she is not permitted to attempt more than 4 questions from any part. In how many different ways can he/she make up his/her choice of 6 questions ?
1
850
2
800
3
750
4
700
03
PYQ 2022
medium
mathematics ID: wbjee-20
There are white and black balls marked . The number of ways in which we can arrange these balls in a row so that neighboring balls are of different colors is
1
(n!)2
2
(2n)!
3
2(n!)2
4
(2n)! /(n!)2
04
PYQ 2022
medium
mathematics ID: wbjee-20
is a set containing elements. and are two subsets of . Then the number of ways of choosing and such that is
1
2 2n-2n Cn
2
2n
3
3n-1
4
3n
About Combinations - WBJEE
Combinations is a vital chapter for WBJEE aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Combinations PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Combinations carry the most weight. Then, tackle the questions iteratively to solidify your understanding.