Tag: knowing our numbers

Questions Related to knowing our numbers

Which of the following is a correct roman numeral ?

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

  1. CXL

  2. CC

  3. XX

  4. All of these

Show answer
Correct Option: D
Explanation:

 

Given that,

$CXL,CC,XX$

We know that,

$CXL=140$ ,CC=200, $XX=20$

 

Hence, this is the answer.

 

Roman numeral for the greatest three digit number is ___________.

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

  1. IXIXIX

  2. CMXCIX

  3. CMIXIX

  4. CMIIC

Show answer
Correct Option: B
Explanation:

Consider the $3$ digit largest number in roman.


The largest $3$ digit number is$999$.


Let's convert that into Roman numerals,


$M=100$,$D=500$,X=100$,$X=10$,$V=5$ and $I=1$.

$900 = CM$

$90 = XC$

$9 = IX$

Therefore, $999 = CMXCIX$

 

Hence, this is the answer.

Numeral for seventy crore one thousand is:

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

  1. $701000$

  2. $70001000$

  3. $700001000$

  4. $7001000$

Show answer
Correct Option: C
Explanation:

By using Indian number system, the numeral value for seventy crore one thousand is

$700001000$.
Hence, the answer is $700001000$.

In the Roman numeral, I can be subtracted from:

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

  1. V and X

  2. M only

  3. V only

  4. none

Show answer
Correct Option: A
Explanation:
Subtraction Rule:
Writing a smaller number to the left of a larger number means that the smaller number has to be subtracted from the larger number. The symbol 1 can be used for subtraction from V and X only. The symbol X can be subtracted only from L and C.

Hence, the answer is V and X.

Convert the Roman numeral MMMCCCXXXIII into its general form.

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:

The value for $MMM$ is $3000$

The value for $CCC$ is $300$
The value for $XXX$ is $30$
And the value for $III$ is $3$.
Thus, the total value is $3333$.

X can be subtracted from:

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

  1. L and C

  2. I and V

  3. I only

  4. V only

Show answer
Correct Option: A
Explanation:

The value of roman value X is $10$ and it can be subtracted from 

L and C only. 
Hence, the answer is L and C.

Numeral for five hundred million and six is:

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

  1. $500006$

  2. $50000006$

  3. $500000006$

  4. $50006$

Show answer
Correct Option: C
Explanation:

Five hundred million and six can be written in numerical form as:

$500000006$.
Hence, the answer is $500000006$.

Roman numeral for the smallest four digit number is:

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

  1. X

  2. M

  3. C

  4. D

Show answer
Correct Option: B
Explanation:

The smallest four digit number is $1000$.

And $1000$ is written in roman numeral as M.
Hence, the answer is M.

Numerals that can be repeated in Roman system are

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

  1. I, X and C

  2. I, V and X

  3. V, L and D

  4. D

Show answer
Correct Option: A
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.

Raju is $22$ years old and Ramu is $19$ years old. Write the difference 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'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.