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RRB Group D Squares And Roots — practice questions

Explore 26 free Squares And Roots questions in RRB Group D Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.

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Squares And Roots questions and exercises with answers

Showing questions 1–26 of 26.

A trader buys 12 oranges for Rs 10 and sells 10 oranges for Rs 12. His profit percent isRead the answer and worked solution →The value of sin 30 degrees + cos 60 degrees isRead the answer and worked solution →Which property is this?Read the answer and worked solution →True or false: closureRead the answer and worked solution →Complete the identity elementsRead the answer and worked solution →Match each property to its statementRead the answer and worked solution →Identities and propertiesRead the answer and worked solution →True or false: how many rationals lie between two rationalsRead the answer and worked solution →Order the steps: find a rational number between two othersRead the answer and worked solution →Tap every property rational numbers have under additionRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Flip and pair: property with its equationRead the answer and worked solution →Complete distributivityRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Additive or multiplicative?Read the answer and worked solution →True or false: reading the propertiesRead the answer and worked solution →Naming the propertyRead the answer and worked solution →Tap every statement the chapter actually establishesRead the answer and worked solution →Assertion and reason: densityRead the answer and worked solution →Order the reasoning: why there is no next rationalRead the answer and worked solution →Which operation keeps rationals closed?Read the answer and worked solution →Spot the odd oneRead the answer and worked solution →Complete the density statementRead the answer and worked solution →Closure in practiceRead the answer and worked solution →

Worked practice questions

A trader buys 12 oranges for Rs 10 and sells 10 oranges for Rs 12. His profit percent is

  1. 20%
  2. 24%
  3. 30%
  4. 44%
Show answer and solution

Correct answer: D. 44%

CP per orange = 10/12 SP per orange = 12/10. Profit per orange = 12/10 - 10/12 = (144 - 100)/120 = 44/120. Profit% = (44/120) / (10/12) x 100 = (44/120) x (12/10) x 100 = 44%.

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The value of sin 30 degrees + cos 60 degrees is

  1. 1/2
  2. 1
  3. sqrt(3)/2
  4. 0
Show answer and solution

Correct answer: B. 1

sin 30 = 1/2; cos 60 = 1/2. Sum = 1.

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Which property is this?

Read exercise and reference answers
Items
  1. Item
    Order of the two numbers does not matter
    Category
    Commutative
  2. Item
    a + b = b + a
    Category
    Commutative
  3. Item
    Grouping of three numbers does not matter
    Category
    Associative
  4. Item
    (a + b) + c = a + (b + c)
    Category
    Associative
  5. Item
    a(b + c) = ab + ac
    Category
    Distributive
  6. Item
    Multiplication spread over a sum
    Category
    Distributive
Categories
  1. Item
    Commutative
  2. Item
    Associative
  3. Item
    Distributive
The property vocabulary is what number-system questions actually test. Source: syllabus Maths, Ch 1 Rational Numbers.

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More Quantitative Aptitude topics

Simple InterestNumber SystemRatio and ProportionTime and WorkProfit and LossSquare RootsProfit LossBasic Arithmetic