Tag: roman numbers and numbers upto hundred

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Questions Related to roman numbers and numbers upto hundred

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

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 $3048$

  1. Both (i) and (iii)

  2. Both (i) and (iv)

  3. Only (i)

  4. Only (ii)
Reveal answer Fill a bubble to check yourself
A Correct answer
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

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

Roman numerals for $498$ is given by:

  1. $COCXVIII$
  2. $COCXIV$
  3. $CDXCVIII$
  4. $COXCVII$
Reveal answer Fill a bubble to check yourself
C Correct answer
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 $CDXCVIII.$