SSC CGL level Question Set 22, Algebra

22nd SSC CGL level Question Set, Algebra

SSC CGL question set 22 algebra 7

This is the 22nd question set of 10 practice problem exercise for SSC CGL exam and 7th on topic Algebra.

For maximum gains, the test should be taken first and then its solutions referred to, that is obvious. But more importantly, to absorb the concepts, techniques and deductive reasoning elaborated through the solutions, one must solve many problems in a systematic manner using the conceptual analytical approach.

Learning by doing is the best learning. There is no alternative towards achieving excellence.

Method of taking the test for getting the best results from the test:

  1. Before start, go through any short but good material to refresh your concepts if you so require.
  2. Answer the questions in an undisturbed environment with no interruption, full concentration and alarm set at 15 minutes.
  3. When the time limit of 15 minutes is over, mark up to which you have answered, but go on to complete the set.
  4. At the end, refer to the answers given at the end to mark your score at 15 minutes. For every correct answer add 1 and for every incorrect answer deduct 0.25 (or whatever is the scoring pattern in the coming test). Write your score on top of the answer sheet with date and time.
  5. Identify and analyze the problems that you couldn't do to learn how to solve those problems.
  6. Identify and analyze the problems that you solved incorrectly. Identify the reasons behind the errors. If it is because of your shortcoming in topic knowledge improve it by referring to only that part of concept from the best source you can get hold of. You might google it. If it is because of your method of answering, analyze and improve those aspects specifically.
  7. Identify and analyze the problems that posed difficulties for you and delayed you. Analyze and learn how to solve the problems using basic concepts and relevant problem solving strategies and techniques.
  8. Give a gap before you take a 10 problem practice test again.

Important: both practice tests and mock tests must be timed, analyzed, improving actions taken and then repeated. With intelligent method, it is possible to reach highest excellence level in performance.

Recommended reading before the test

Concept tutorials on Algebra

Basic and rich algebraic concepts for elegant solutions of SSC CGL problems

More rich algebraic concepts and techniques for elegant solutions of SSC CGL problems.


22nd question set- 10 problems for SSC CGL exam: 7th on topic Algebra - answering time 15 mins

Q1. The value of $a = \displaystyle\frac{b^2}{b-a}$, then the value of $a^3 + b^3$ is,

  1. 1
  2. 6ab
  3. 2
  4. 0

Q2. If $x = \sqrt[3]{5} + 2$, then the value of $x^3 - 6x^2 + 12x -13$, is,

  1. 0
  2. -1
  3. 2
  4. 1

Q3. If $p=124$, then the value of $\sqrt[3]{p(p^2 + 3p + 3) + 1}$, is,

  1. 123
  2. 5
  3. 7
  4. 125

Q4. The factors of $(a^2 + 4b^2 + 4b - 4ab - 2a - 8)$ are,

  1. $(a + 2b - 4)(a + 2b + 2)$
  2. $(a - 2b - 4)(a - 2b + 2)$
  3. $(a + 2b - 1)(a - 2b + 1)$
  4. $(a - b + 2)(a - 4b - 4)$

Q5. When the expression $12x^3 - 13x^2 -5x + 7$ is divided by $3x + 2$ the remainder is,

  1. 0
  2. 2
  3. 1
  4. -1

Q6. If $x(x-3)=-1$ then the value of $x^3(x^3 - 18)$ will be,

  1. 2
  2. 0
  3. 1
  4. -1

Q7. If $x = \sqrt{5} + 2$, then the value of $\displaystyle\frac{2x^2 - 3x - 2}{3x^2 - 4x - 3}$ is,

  1. 0.525
  2. 0.625
  3. 0.785
  4. 0.185

Q8. If $\displaystyle\frac{p}{a} + \displaystyle\frac{q}{b} + \displaystyle\frac{r}{c} = 1$, and $\displaystyle\frac{a}{p} + \displaystyle\frac{b}{q} + \displaystyle\frac{c}{r} = 0$, where $p$, $q$, $r$, $a$, $b$ and $c$ are non-zero, the value of $\displaystyle\frac{p^2}{a^2} + \displaystyle\frac{q^2}{b^2} + \displaystyle\frac{r^2}{c^2}$ is,

  1. 2
  2. -1
  3. 0
  4. 1

Q9. If equation $2x^2 -7x + 12 = 0$ has two roots $\alpha$ and $\beta$, then the value of $\displaystyle\frac{\alpha}{\beta} + \displaystyle\frac{\beta}{\alpha}$ is,

  1. $\displaystyle\frac{1}{24}$
  2. $\displaystyle\frac{7}{24}$
  3. $\displaystyle\frac{7}{2}$
  4. $\displaystyle\frac{97}{24}$

Q10. If $a - b= 3$, and $a^3 - b^3 = 117$, then absolute value of $a + b$ is,

  1. 5
  2. 7
  3. 3
  4. 9

Other resources that you may find valuable

Concept tutorials on Algebra

Basic and rich algebraic concepts for elegant solutions of SSC CGL problems

More rich algebraic concepts and techniques for elegant solutions of SSC CGL problems

General guidelines for successful performance in SSC CGL test

7 Steps for sure success in SSC CGL tier 1 and tier 2 competitive tests

Elegant math problem solving group of articles

How to solve difficult math problems in a few steps

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