Which of the following letters does not represent the Roman numeral?

The estimated product of $102\times 92$ is _____.

Which of the following numbers is the smallest?

Which of the following is true?

The piece of cloth required for a shirt is $2$ m $85$ cm. How much cloth will required for $16$ such shirts?

Estimated difference of $\left(673-258\right)$ to the nearest hundreds is _____.

Place value of a digit in a number is _____.

Smallest $6‐$digit number formed by using digits $5, 0, 3, 2, 6, 1$ each only once is _____.

Convert $\text{CDXCIV}$ into Hindu-Arabic Numeral.