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IIFT Algebra — practice questions — page 4

Explore 101 free Algebra questions in IIFT Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.

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Algebra questions and exercises with answers

Showing questions 91–101 of 101.

A number of toys problem leads to 2x squared plus x minus 300 equals 0. Its discriminant is:Read the answer and worked solution →Because 2401 is the square of 49, that equation has roots that are:Read the answer and worked solution →Before applying any solving method, an equation must first be written in its:Read the answer and worked solution →Catch the quadraticsRead the answer and worked solution →Pop the root outcomesRead the answer and worked solution →Run the quadratic gatesRead the answer and worked solution →Slice the quadratic wordsRead the answer and worked solution →Real roots or noneRead the answer and worked solution →Sort the equationsRead the answer and worked solution →Type the numberRead the answer and worked solution →Quadratics bingoRead the answer and worked solution →

Worked practice questions

A number of toys problem leads to 2x squared plus x minus 300 equals 0. Its discriminant is:

  1. 2401
  2. 1201
  3. 1801
  4. 2001
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Correct answer: A. 2401

1. Square 1 to get 1. 2. Subtract 4 times 2 times minus 300, which adds 2400. 3. The discriminant is 2401. _Source: syllabus Mathematics, Chapter 4, Quadratic Equations._

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Because 2401 is the square of 49, that equation has roots that are:

  1. Undefined
  2. Rational
  3. Irrational
  4. Imaginary
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Correct answer: B. Rational

1. A perfect square discriminant gives exact roots. 2. No surd is left over. 3. The roots are rational. _Source: syllabus Mathematics, Chapter 4, Quadratic Equations._

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Before applying any solving method, an equation must first be written in its:

  1. Standing form
  2. Starting form
  3. Stacking form
  4. Standard form
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Correct answer: D. Standard form

1. Terms go in descending order of degree. 2. Only then are a, b and c identified. 3. It must be in standard form. _Source: syllabus Mathematics, Chapter 4, Quadratic Equations._

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