Tag: maths

Questions Related to maths

Roman numeral for the greatest single digit number is  

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

  1. XI

  2. IC

  3. IX

  4. ID

Show answer
Correct Option: C
Explanation:

$IX=9$

X can be subtracted from

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

  1. $L$ and $ C$

  2. $D$  and $ M$

  3. $D $ only

  4. $M $ only

Show answer
Correct Option: A
Explanation:

While writing Roman Numbers, do not subtract a number from one that is more than  $10$  times greater (that is, you can subtract  $1$  from $10 [IX]$  but not $ 1$  from $ 20$  there is no such number as $ IXX.)$
Hence,$ X (10)$  can be subtracted from $ L (50) \ and \ C (100)$

Write $39$ in roman numbers

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

  1. XXXIX

  2. XXXXI

  3. XXXX

  4. None of these

Show answer
Correct Option: A
Explanation:
To convert $39$ to Roman Numerals we need to split it up into place values (ones, tens, hundreds, etc.), like this:

Place Value Number Roman Numeral
Tens            $30$ $XXX$
Ones               $9$ $IX$


Please note, we skipped place values that equal 0.

You then combine them all together (starting from the top) to get $XXXIX.$
So option A is the correct answer.

Roman numerals for $498$

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

  1. CDCXVIII

  2. CDCXIV

  3. CDXCVIII

  4. CDXCVII

Show answer
Correct Option: C
Explanation:

The Roman numerals are represented by the following letters:

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

If a numeral is followed by another numeral of lower denomination, the two are added together;

if it is preceded by one of lower denomination, the smaller numeral is subtracted from the greater.

400 + 90 + 8 = CDXCVIII

$CDXCVIII=498$

Roman numeral for $2440$ is 

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

  1. $MMCDXL$

  2. $MCDXL$

  3. $MMMDXL$

  4. $MMDLX$

Show answer
Correct Option: A
Explanation:
$M=1000,C=100,X=10 ,I=1$
$2440=2000+400+40$
          $=2000+(500-100)+(50-10)$
          $= MM    CD    XL$
$2440 = MMCDXL$

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

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

  1. III

  2. XXDI

  3. XXXLII

  4. XXXLL

Show answer
Correct Option: A
Explanation:

Raju is 22 years old and Ramu is 19 years old.

$\text{Difference between Raju age and Ramu age=19-16=3years}$
$\text{In roman three is represented as III}$
Option A is correct.

Bobby's date of birth is $19^{th}$ September. Express the date in Roman system.

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

  1. XXI

  2. XIXX

  3. IIX

  4. XIX

Show answer
Correct Option: D
Explanation:

$19=XIX$

Hindu-Arabic numeral for  $MMMCCCXXXIII$  is

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

  1. $333$

  2. $30303$

  3. $3333$

  4. $3330$

Show answer
Correct Option: C
Explanation:

As  $M=1000,C=100,X=10 ,I=1$
If number $MMMCCCXXXIII=3000+300+30+3=3333$ is within to text or sentence it should be read in its equivalent in arabic numbers, in this case $3333$.

The product obtained in Roman numeral when $28$ is multiplied by $2$ is

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

  1. LIV

  2. LII

  3. LVI

  4. LVII

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Correct Option: C
Explanation:

$28\times 2=56=LVI$

Hindu-Arabic numeral for CCCXLVII.

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

  1. 357

  2. 347

  3. 367

  4. 387

Show answer
Correct Option: B
Explanation:

(B) $CCCXLVII$
$100+100+100+40+7=347$