Mathematics: Test Your Knowledge with These Challenging Questions

Questions

1. What is the value of Pi (π) rounded to two decimal places? a) 3.14
   b) 3.15
   c) 3.16
   d) 3.13
2. What is the sum of the interior angles of a triangle in degrees? a) 180°
   b) 360°
   c) 90°
   d) 270°
3. Which number is known as the “square root of 81”? a) 7
   b) 8
   c) 9
   d) 10
4. If a rectangle has a length of 8 units and a width of 3 units, what is its area? a) 24 square units
   b) 11 square units
   c) 24 units
   d) 11 units
5. What is 15% of 200? a) 30
   b) 25
   c) 35
   d) 20
6. Which of the following is a prime number? a) 21
   b) 29
   c) 35
   d) 42
7. What is the next number in the sequence: 2, 4, 8, 16, ___? a) 20
   b) 24
   c) 32
   d) 48
8. In mathematics, what does the abbreviation “LCM” stand for? a) Least Common Multiple
   b) Largest Common Multiple
   c) Least Common Multiple
   d) Longest Common Multiple
9. If x = 5, what is the value of 2x + 3? a) 10
   b) 13
   c) 15
   d) 8
10. What is the perimeter of a square with side length 6 units? a) 24 units
    b) 36 units
    c) 12 units
    d) 30 units

Answers:

1. a) 3.14
2. a) 180°
3. c) 9
4. a) 24 square units
5. a) 30
6. b) 29
7. c) 32
8. a) Least Common Multiple
9. b) 13
10. a) 24 units