Mathematics · Quantitative Aptitude

Number Operations and Properties

896 Questions

Improve your quantitative aptitude with these number operations and properties questions. The topics range from basic subtraction and division to highest common factor and roman numerals. Regular practice of these fundamentals builds speed for exams.

Basic arithmetic operationsHCF and number propertiesRoman numeral calculationsNumber series evaluation

Number Operations and Properties Questions

Multiple choice roman numbers and numbers upto hundred roman numerals knowing our numbers maths

Perform the following operations and write the answer in Roman form  
$17 + (8 - 5) 5$

  1. XI

  2. XXXII

  3. XV

  4. XXV
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation


$17+(8-5)5$

$17+(3)5$
$17+15$
$32$
Converting to roman

|  Iteration |  Decimal     number |  Highest decimal value |  Highest roman numeral | Number  | | --- | --- | --- | --- | --- | |  $1$ |  $32$ |  $10$ |  $X$ |  $X$ | |  $2$ |   $22$ |  $10$ |  $X$ |  $XX$ | |  $3$ |   $12$ |  $10$ |  $X$ |  $XXX$ | |  $4$ |   $2$ |  $1$ |  $I$ |  $XXXI$ | |  $5$ |   $1$ |  $1$ |  $1$ |  $XXXII$ |

 

So option $B$ is correct.

Multiple choice roman numbers and numbers upto hundred roman numerals knowing our numbers maths

Roman number representation of  $1350$ is?

  1. CCXLV

  2. MCCCL

  3. ML

  4. CXII
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Conversion to roman

 Iteration  Decimal number  Highest decimalvalue  Highest romannumeral  Temporary  result
 $1$  $1350$  $1000$  $M$  $M$
  $2$  $350$  $100$  $C$  $MC$
  $3$  $250$  $100$  $C$  $MCC$
  $4$  $150$  $100$  $C$  $MCCC$
  $5$  $50$  $50$  $L$  $MCCCL$

So $1350$ in roman is $MCCCL$

Multiple choice maths parts and whole multiplication of a fraction multiplication of a fractions multiplication of fraction finding the whole when a fraction is given

Which pair of numbers does not have a product equal to $36$?

  1. $\{ -4, -9\}$
  2. $\{ -3, -12\}$
  3. $\left\{ \displaystyle\frac{1}{2} , -72\right\}$
  4. $\{1, 36\}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Option A= Product of $-4$ and $-9$=$-4\times -9=36$

Option B=Product of $-3$ and $-12$= $-3\times -12=36$
Option C= Product of $\dfrac{1}{2}$ and $-72$=$\dfrac{1}{2}\times{-72}=-36$
Option D= Product of $1$ and $36$ = $1\times 36=36$
Option C is the correct answer.

Multiple choice maths parts and whole finding the whole when a fraction is given multiplication of a fraction multiplication of a fractions

Which point on the number line most likely represent $-2\cfrac { 5 }{ 8 } $?

  1. On the left of $-3$
  2. On the right of $-2$
  3. Between $-2$ and $-3$
  4. In the middle of $-2$ and $-3$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
$-2\cfrac { 5 }{ 8 } $

$-2\cfrac { 5 }{ 8 } =(-1)2\cfrac { 5 }{ 8 } $

$=-1\times \cfrac { 21 }{ 8 } $

$=-2.625$

It lies in between $-3$ and $-2$