INTERACTIVE NUMBER SYSTEM QUIZ - 2

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1. Comparing Numbers

Comparing numbers means identifying which number is greater, smaller, or equal. We use symbols like:

> Greater Than
< Less Than
= Equal To

Example:

67,890 > 67,809

Because 890 is greater than 809.

Question 1:

Which of the following mathematical statements is correct?

98,765 > 98,756 98,756 > 98,765 98,765 = 98,756 Cannot Compare

2. Formation of Numbers

Formation of numbers means arranging digits to form greatest or smallest numbers. Zero cannot be placed at the beginning.

Example:

Digits: 4, 8, 1, 0

Greatest Number = 8410
Smallest Number = 1048

Question 2:

What is the smallest 5-digit number that can be formed using the digits 3, 0, 5, 7, and 9?

30579 30975 39750 35790

3. Roman Numerals

Roman numerals use letters to represent numbers.

I = 1
V = 5
X = 10
L = 50
C = 100

Example:

44 = XLIV

Question 3:

What is the correct Roman Numeral representation for the number 99?

XCIX IC LXXXXIX XCVIIII

4. Indian Number System

In the Indian Number System commas are placed after 3 digits from the right and then every 2 digits.

Example:

5,67,89,321

Question 4:

Which option correctly displays forty-five lakh sixty-seven thousand eight hundred ninety using commas according to the Indian Number System?

45,67,890 4,567,890 456,78,90 45,678,90

5. International Number System

In the International Number System commas are placed after every 3 digits.

Example:

12,345,678

Question 5:

Which of the following numbers is correctly formatted according to the International Number System?

12,34,567 1,234,567 123,45,67 1,23,45,678

6. Divisibility Rules

Divisibility rules help us quickly identify whether a number is divisible by another number.

Divisible by 2 → Ends in 0,2,4,6,8
Divisible by 5 → Ends in 0 or 5
Divisible by 9 → Sum of digits divisible by 9

Example:

729 → 7+2+9 = 18
18 is divisible by 9
Therefore 729 is divisible by 9.

Question 6:

Which of the following numbers is completely divisible by 9?

648 652 674 689