Tag: maths

Questions Related to maths

$XIX+XXX=$ ________

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

  1. $49$

  2. $51$

  3. $55$

  4. $44$

Show answer
Correct Option: A
Explanation:

$19+30=49$

The first basic Roman numeral is

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

  1. 0

  2. I

  3. V

  4. X

Show answer
Correct Option: B
Explanation:

(B) 1

The number obtained when $143$ is divided by $13$(in roman number) is ______ 

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

  1. $XII$

  2. $XI$

  3. $IX$

  4. none of these

Show answer
Correct Option: B
Explanation:

We have, $143÷13= 11$

The number $11$ is written in Roman numerals as $XI$

So option B is the correct answer.

The Roman numeral for $3721 \div 61$ is

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

  1. LC

  2. XLI

  3. LXI

  4. CM

Show answer
Correct Option: C
Explanation:

$3721÷61=61$


$61$ will be written as $LXI$

Because $L=50, X=10, I=1$

$50+10+1=61$

So option C is the correct answer.

Which of the following are meaningless?

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

  1. VX

  2. IXIV

  3. XIIV

  4. All the above

Show answer
Correct Option: D
Explanation:

VX(incorrect) = 5 = V

IXIV(incorrect) = 13 = XIII

XIIV(incorrect) = 13 = XIII

So, given options A, B and C are meaningless

The symbol that can never be repeated is  

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

  1. I

  2. V

  3. X

  4. M

Show answer
Correct Option: B
Explanation:

The double of $V (5)$ in Roman numerals will be $X (10)$

So only $V$ is the symbol that cannot be repeated.

The product obtained when $13$ is multiplied by $7$(in roman number ) is 

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

  1. XXCI

  2. LXI

  3. XCI

  4. CI

Show answer
Correct Option: C
Explanation:
 $13\times 7=91$
Break the number $91$ (decompose it) into place value subgroups: 
$91 = 90 + 1;$

Convert each subgroup: $90 = 100 - 10 => C - X = XC; 1 = I;$

Wrap up the Roman numeral: 
$91 = 90 + 1 = XC + I = XCI;$
$ XCI$ is a group of numerals in additive and subtractive notation which will be $91.$

So option C is the correct answer.

Compare $XXII$ __ $12$ (using $>, <, =$)

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

  1. $>$

  2. $<$

  3. $=$

  4. none

Show answer
Correct Option: A
Explanation:

WE know, $XXII$ stands for $22$ in Roman numerals.

$22$ is greater than $12$ 
So $XXII>12$

So option A is the correct answer.

MMM stands for ____________.

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

  1. $3000$

  2. $100$

  3. $300$

  4. $1000$

Show answer
Correct Option: A
Explanation:

M  stands for thousand in roman numerals

$\therefore$ MMM= 3000

XC is same as __________.

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

  1. 100 - 10

  2. 100 + 10

  3. 100 - 50

  4. 100 - 9

Show answer
Correct Option: A
Explanation:

We know that

$X=10, C=100$

Therefore,
$XC=100-10$

Hence, this is the answer.