Tag: maths

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Questions Related to maths

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

Numerals that can be repeated in Roman system are

  1. I, X and C

  2. I, V and X

  3. V, L and D

  4. D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

V can be used once in the Roman system
Similarly, L and D can be used only once in the Roman System
But I, X and C can be repeated in the Roman system to represent certain number.
Thus, the numerals that can be repeated in Roman system are I, X and C.

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

Raju is $22$ years old and Ramu is $19$ years old. Write the difference of their ages in Roman system.

  1. III

  2. XXDI

  3. XXXLII

  4. XXXLL
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Raju's age is $22$ years and Ramu's age is $19$ years.

The difference between their ages is $22-19=3$ years
And $3$ can be written in roman value as III.

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

 Roman number representation of $655$ is

  1. DCLV

  2. CLV

  3. XXI

  4. ML
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Converting to Roman

 Iteration  Decimalnumber  Highest decimal  Highest roman Tempoaray result 
 $1$  $655$  $500$  $D$  $D$
 $2$   $155$ $100$   $C$  $DC$
 $3$   $55$ $50$  $L$  $DCL$
 $4$   $5$ $5$   $V$  $DCLV$

$655=DCLV$

So option $A$ is correct.

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

 Numerical form representation of DCCXXII is?

  1. 120

  2. 115

  3. 722

  4. 730
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
 Iteration  Highest Roman  Highest Numeral  Temporary'Number
 $1$  $D$  $500$  $500$
 $2$  $C$  $100$  $600$
 $3$  $C$  $100$  $700$
 $4$  $X$  $10$  $710$
 $5$  $X$  $10$  $720$
 $6$  $X$  $1$  $721$
 $7$  $I$  $1$  $722$

$DCCXXII=722$

So none of the options are correct

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.