There are 4 zeroes in ten thousands.

Q. There are 2 zeros in thousand

Q. 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 $3048$

Q.

There are ___ zeros in ten crores.

Q. Write the number given in the expanded form:
$3\text{tens}+5\text{thousands}+4\text{ten thousands}+7\text{hundreds}+9\text{ones}+6\text{lakhs}$