Algebra & Number Theory

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Algebra & Number Theory MCQ & Objective Questions

Algebra & Number Theory form a crucial part of the mathematics syllabus for students preparing for school exams and competitive tests in India. Mastering these topics not only enhances your problem-solving skills but also boosts your confidence in tackling objective questions. Practicing MCQs and important questions in this area can significantly improve your exam performance and help you secure better scores.

What You Will Practise Here

  • Fundamental concepts of algebra including variables, constants, and coefficients.
  • Linear equations and their applications in real-life scenarios.
  • Quadratic equations and methods to solve them, including factoring and the quadratic formula.
  • Understanding number systems, including integers, rational numbers, and irrational numbers.
  • Properties of numbers, including divisibility, prime numbers, and composite numbers.
  • Basic concepts of modular arithmetic and its applications in number theory.
  • Common algebraic identities and their usage in simplifying expressions.

Exam Relevance

Algebra & Number Theory are integral to the mathematics curriculum across various boards, including CBSE and State Boards. These topics frequently appear in competitive exams like NEET and JEE. Students can expect questions that test their understanding of concepts, application of formulas, and problem-solving abilities. Common question patterns include multiple-choice questions that require quick thinking and accurate calculations, making it essential to practice regularly.

Common Mistakes Students Make

  • Misinterpreting the question, leading to incorrect application of formulas.
  • Overlooking signs in equations, especially when solving linear and quadratic equations.
  • Confusion between different types of numbers, such as rational and irrational.
  • Neglecting to check for extraneous solutions in quadratic equations.
  • Failing to apply algebraic identities correctly in simplification problems.

FAQs

Question: What are some effective strategies for solving Algebra & Number Theory MCQs?
Answer: Focus on understanding concepts, practice regularly, and familiarize yourself with common question patterns. Time management during practice is also crucial.

Question: How can I improve my speed in solving objective questions in Algebra & Number Theory?
Answer: Regular practice of MCQs, timed quizzes, and reviewing mistakes can help improve your speed and accuracy.

Start your journey towards mastering Algebra & Number Theory today! Solve practice MCQs and test your understanding to excel in your exams. Remember, consistent practice is the key to success!

Q. What is the HCF of 14, 28, and 42?
  • A. 14
  • B. 7
  • C. 28
  • D. 21
Q. What is the HCF of 24 and 36?
  • A. 6
  • B. 12
  • C. 18
  • D. 24
Q. What is the HCF of 56, 98, and 42?
  • A. 14
  • B. 7
  • C. 28
  • D. 21
Q. What is the HCF of 81 and 27?
  • A. 27
  • B. 54
  • C. 81
  • D. 9
Q. What is the LCM of 12, 15, and 20?
  • A. 60
  • B. 120
  • C. 180
  • D. 240
Q. What is the LCM of 4 and 5?
  • A. 10
  • B. 20
  • C. 15
  • D. 5
Q. What is the LCM of 6 and 8?
  • A. 12
  • B. 24
  • C. 18
  • D. 30
Q. What is the LCM of 6, 8, and 12?
  • A. 24
  • B. 48
  • C. 36
  • D. 60
Q. What is the LCM of 8, 12, and 15?
  • A. 120
  • B. 60
  • C. 30
  • D. 90
Q. What is the LCM of 9 and 21?
  • A. 63
  • B. 189
  • C. 27
  • D. 42
Q. What is the product of the roots of the equation x^2 + 3x - 10 = 0?
  • A. -10
  • B. 10
  • C. 3
  • D. -3
Q. What is the product of the roots of the equation x^2 + 5x + 6 = 0?
  • A. 6
  • B. 5
  • C. 4
  • D. 3
Q. What is the product of the roots of the equation x^2 - 7x + 10 = 0?
  • A. 10
  • B. 7
  • C. 5
  • D. 3
Q. What is the relationship between HCF and LCM of two numbers a and b?
  • A. HCF = a + b
  • B. HCF * LCM = a * b
  • C. HCF + LCM = a * b
  • D. HCF - LCM = a - b
Q. What is the remainder when 29 is divided by 5?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. What is the simplified form of (√(2) * √(8))?
  • A. √(16)
  • B. 4
  • C. 2√(2)
  • D. 8
Q. What is the simplified form of (√(a^2) * √(b^2))?
  • A. ab
  • B. a^2b^2
  • C. a + b
  • D. a + b^2
Q. What is the sum of the roots of the equation x^2 - 5x + 6 = 0?
  • A. 5
  • B. 6
  • C. 7
  • D. 8
Q. What is the sum of the roots of the equation x^2 - 6x + 8 = 0?
  • A. 6
  • B. 8
  • C. 4
  • D. 2
Q. What is the sum of the roots of the equation x^2 - 7x + 10 = 0?
  • A. 5
  • B. 7
  • C. 10
  • D. 12
Q. What is the value of (3^(2))^(3)?
  • A. 3^(5)
  • B. 3^(6)
  • C. 3^(7)
  • D. 3^(8)
Q. What is the value of (√(2) * √(8))?
  • A. 2
  • B. 4
  • C. 8
  • D. 16
Q. What is the value of (√(2) + √(3))^2?
  • A. 5
  • B. 6
  • C. 7
  • D. 8
Q. What is the value of (√(3) + √(2))^2?
  • A. 5
  • B. 7
  • C. 10
  • D. 12
Q. What is the value of 4^(1/2) * 4^(1/2)?
  • A. 2
  • B. 4
  • C. 8
  • D. 16
Q. What is the value of 4^(1/2)?
  • A. 2
  • B. 4
  • C. 8
  • D. 16
Q. What is the value of 4^(3/2)?
  • A. 8
  • B. 16
  • C. 32
  • D. 64
Q. What is the value of 5^(0)?
  • A. 0
  • B. 1
  • C. 5
  • D. undefined
Q. What is the value of 9^(1/2) + 16^(1/2)?
  • A. 5
  • B. 7
  • C. 9
  • D. 10
Q. What is the value of log4(64)?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
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