Bihar Board Class 12 Math Important Questions 2026

Pratha Shishodia

Updated On: July 08, 2025 03:28 PM

Bihar Board Class 12 Math Important Questions 2026 can help students practice solving a variety of questions while preparing for the board exams. Read the article in detail to become familiar with the types of questions. 
Bihar Board Class 12 Math Important Questions
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Bihar Board Class 12 Math Important Questions 2026 can help you to solve different types of questions that could be asked in the final paper. Bihar Board Class 12 Math exam, which consists of objective and subjective type questions, will have a total of 138 questions. Out of this, students will get the internal choice within the sections. Some important questions from the previous year's question papers are listed here. You will find questions worth 1, 2, and 5 marks. You can try to solve the question regularly and get familiar with the types of questions and Bihar Board Class 12 Mathematics Exam Pattern 2025-26 . This will also help you to recognize your weaknesses. As per your performance, you can focus more on the topics from which you are unable to solve the questions. Check out the important questions listed below in the article and pay attention to the marks to know the importance of the questions.

Also Read Bihar Board Class 12 Exam Date 2026

Bihar Board Class 12 Math Important Questions 2026 of 1 Mark

Following are the objective questions for 1 mark each. Try solving the questions thoroughly to be able to solve similar questions in board exams.

Q1. If the direction ratios of two parallel lines are x, 5, 3 and 20, 10, 6 then the value of x is.

(A) 10

(B) 5

(C) 3

(D) 40

Q2. f'(ax b)dx =

  1. f(ax b) + c
  2. f(ax b) + c
  3. f(ax b) + c
  4. f(ax b) + c

Q3. If the direction ratios of a straight line are -18, 12, -4 then its direction cosines are

  1. -9/11, 6/11, -2/11
  2. 9/11, 6/11, 2/11
  3. -9/11, -6/11, -2/11
  4. none of these

Q4. Subject to constraints x + y 5, x 0, y 0, the maximum value of z = 2x + 3y is

  1. 10
  2. 15
  3. 20
  4. none of these

Q5. If f:R R is a function then f-1 : R R will exist if f is

  1. one-one into B. onto
  2. one-one onto D. many one onto

Bihar Board Class 12 Math Important Questions 2026 of 2 Marks

Solve the questions given below to get an idea of the types of important questions appearing in board exams for 2 marks.

Q1. Define a relation in the set A = {a, b, c} which is a

  1. Reflexive relation
  2. Symmetric relation
  3. Transitive relation

Q2. Find the area of the quadrilateral formed by the lines y = 2x + 3, y = 0, x = 4, x = 6.

Q3. Find the acute angle between two lines that have the direction ratios (1, 1, 0) and (2, 1, 2).

Q4. Find the mean for the following probability distribution.

xi

0

1

2

3

pi

1/8

3/8

3/8

1/8

Q5. Solve the following linear programming problem:

Maximize z = 5x + 6y

Subject to the constraints x + y≤8, x≥0, y≥0.

Also Read - Bihar Board 12th Math Previous Year Question Paper

Bihar Board Class 12 Math Important Questions 2026 of 5 Marks

Solve these questions carefully to score full marks. The long questions require more attention and knowledge. Ensure you include all the steps required in the calculation of the answer.

Q1. If in ∆ABC, A = tan -1 2 and B=tan -1 3, then prove that C = π/4

Q2. Minimize : z = 3x + 5y 36

Subject to x + 3y ≥ 3

x + y ≥ 2

x, y ≥ 0

Q4. Prove that x - sinx has neither a maximum value nor a minimum value.

Q5. Find the variance of the number of heads in two tosses of a coin.

How many important questions should I prepare for the Math exam?

On the completion of the Bihar Board Class 12 Math syllabus 2025-26 , you should try to solve different types of questions. All short and long questions can give you an idea about the types of questions asked in the board exam. By solving different important questions listed here, you can prepare well for the exam and aim at scoring high marks.

All the important questions are included in this article in order to help students prepare well and perform their best. Keep visiting the page to get familiar with the latest questions asked in the board exam.

FAQs

Will there be similar questions in the board exams as included in the list of important questions?

These important questions are listed from the previous year question papers for Bihar Board Class 12 Math. The language or digits can be modified. By identifying such questions, you will be able to solve all the questions easily and score good marks. 

Is it necessary to show the steps for each calculation done for the Class 12 Math questions?

According to the marks allotment, you can present the calculation done for the questions in Class 12 Math exam. For the long questions, each step should be clearly mentioned. For short questions, you can do the calculator in a rough work column on the right side of the answer sheet. This should be done clearly so that if it has to be reviewed, it should be easy to understand.

How many important questions should I solve for the Bihar Board Class 12 Math 2026?

To prepare for the Bihar Board Class 12 Math 2026 exam, you can solve a number of important questions. Solving all short and long questions will help you to get full marks. 

Will there be objective type questions in the Bihar Board Class 12 Math 2026 exam?

In the Bihar Board Class 12 Math 2026 exam, you will find objective type questions in section A. It will include 100 questions and you will have to answer any 50 questions from them. These questions can be quickly solved and you can get full marks for correct answers.

Can I score more than 90 marks by practicing the important questions for Bihar Board Class 12 Math 2026?

You can regularly solve the important questions for Bihar Board Class 12 Math 2026 exam in order to prepare for the board exams. In the board exams, you will find similar questions and it will be easy for you to provide correct answers. 

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