Tag: knowing our numbers

Questions Related to knowing our numbers

In Roman Numeral $C$ has value of

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

  1. $100$

  2. $50$

  3. $1000$

  4. $500$

Show answer
Correct Option: A
Explanation:

In Roman numeral form, 

$100 = C$
$50 = L$
$1000 = M$
$500 = D$

Express $19$ in Roman numeral:

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

  1. $XIX$

  2. $XXI$

  3. $XX$

  4. $XI$

Show answer
Correct Option: A
Explanation:

In Roman numeral form, 

$10 = X$
$9 = IX$

$\Rightarrow 19 = XIX$

Sumit scored $CDLXXXII$ marks in the annual examination. What is the Hindu-Arabic number for this Roman Number?

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

  1. $500$

  2. $432$

  3. $482$

  4. $453$

Show answer
Correct Option: C
Explanation:

Hindu arabic number for $CDLXXXII=482$

Hence the correct answer is option C.

Roman numerical 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:

Greatest $3$ digit number is $999$

Roman numeral for $ 900 = CM$
Roman Numeral for $ 90 = XC$
Roman Numeral for $ 9 = IX$
Roman Numeral for $ 999 = CMXCIX$

Find the value of $MMDCCCLX-MMDCCLIII$.

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

  1. $XCIX$

  2. $LXII$

  3. $XC$

  4. $CVII$

Show answer
Correct Option: D
Explanation:

$MMDCCCLX-MMDCCLIII$

= $2860-2753$
= $107$ = $CVII$

Which of the following statements is/are INCORRECT?
(i) Eighty four in Roman numeral is written as $CXXXIV$
(i) There are seven zeroes in $1$ crore.
(iii) There are ten thousand milligrams in $1kg$
(iv) The smallest $4$-digit number formed by using all the digits $4,3,0,8$ without repetition is $3048$

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

  1. Both (i) and (iii)

  2. Both (i) and (iv)

  3. Only (i)

  4. Only (ii)

Show answer
Correct Option: A
Explanation:
(i) $84=LXXXIV$
(ii) $1\quad crore=10000000$
(iii) $1kg=1000g=1000\times 10000mg=10000000mg$
(iv) Smallest number formed is $3048$
(i) and (iii) are INCORRECT
Answer : A

Using binomial theorem if $6^{n}-5n$ divided by $25$ it always leaves the remainder $5$.

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

  1. True

  2. False

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Correct Option: B

$I$ can be subtracted from 

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

  1. $V, X $ 

  2. $M$  only

  3. $V$  only

  4. none

Show answer
Correct Option: A
Explanation:


Hence,$ I$  can be subtracted from$ V, X $

Roman numerals for $498$ is given by:

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

  1. $COCXVIII$

  2. $COCXIV$

  3. $CDXCVIII$

  4. $COXCVII$

Show answer
Correct Option: C
Explanation:

$\Rightarrow$  The given number is $498.$

$\Rightarrow$  In Roman numbers $I=1,\,V=5,\,X=10,\,C=100$ and $D=500$.
$\Rightarrow$  $498=400+90+8$      [ Breaking the number into place value of subgroups ]
$\Rightarrow$  $400=500-100=D-C=CD$
$\Rightarrow$  $90=100-10=C-X=XC$
$\Rightarrow$  $8=5+1+1+1=V+I+I+I=VIII$
$\Rightarrow$  Now adding all the Roman numeral.
$\therefore$   $498=400+90+8=CD+XC+VIII=CDXCVIII$
$\therefore$   Roman numerals for 498 is $CDXCVIII.$

The symbols of roman numerals can never be repeated is ________.

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

  1. I

  2. V

  3. X

  4. None of these

Show answer
Correct Option: B
Explanation:

Consider the symbol that can never be repeated.

Hence, $V$ is the symbol that can never be repeated.

Hence, this is the answer.