Tag: knowing our numbers

Questions Related to knowing our numbers

The product obtained when 13 is multiplied by 7 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:

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.

 

13 $\displaystyle \times $ 7 = 91
91 $\displaystyle \rightarrow $ XCI

When a Roman numeral of smaller value is put between two numbers of greater value, it is subtracted from the numeral on its ...........

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

  1. Left

  2. Right

  3. Both sides

  4. Next numeral from left

Show answer
Correct Option: B
Explanation:
             ANS. RIGHT (B)
             EXAMPLE: XIV=14
                                 X+IV=10+4
                 In it I is subtracted from base number V to make it 4.
              Therefore, in roman numerals lesser number which is to be  subtracted is placed on the left side and subtracted from the base number on right side.

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:

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.

As the above numbers on solving are negative, they all are meaningless

The Roman numeral for 3721 : 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 $\displaystyle \div $ 61 = 61

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.

$\therefore $ 61 = LXI

Roman numeral for 2143 is

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

  1. MMCXLIII

  2. MMCLIII

  3. MMCXLII

  4. none of these

Show answer
Correct Option: A
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.

 

MMCXLIII

Compare XXII &$\displaystyle  $ 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:

XXII $\displaystyle $ 12
22 > 12

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.

The number of matchsticks that can be used to write 23 in Roman system are

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

  1. 6

  2. 7

  3. 8

  4. 9

Show answer
Correct Option: B
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.

 

23 = XXIII
Therefore, Number of matchsticks required is 7.

Write $14$ in numeral form.

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

  1. $IV$

  2. $XIV$

  3. $XVI$

  4. $XV$

Show answer
Correct Option: B
Explanation:

In Roman numeral form, 

$10 = X$
$4 = IV$

$\Rightarrow 14 = XIV$

The difference between Roman numerical M and C is

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

  1. MC

  2. CM

  3. CX

  4. LX

Show answer
Correct Option: B
Explanation:

$M=100$

$C=50$
$M-C=100-50=50$
$M-C=M$
So option $B$ is correct.

Convert the given Roman Numerals  'XC' and 'C' in English numeral and then find its difference.

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

  1. $100$

  2. $20$

  3. $10$

  4. $12$

Show answer
Correct Option: C
Explanation:

In Roman numeral form, 

$C = 100$
$\Rightarrow XC = 100-10 = 90$

$\therefore$ Difference between $C$ and $XC = 100-90 = 10$