21. Solve for y: 4y = 20
A. 4
B. 5
C. 5
D. 6
22. What is the value of π (pi) to two decimal places?
A. 3.12
B. 3.14
C. 3.14
D. 3.16
23. If a triangle has sides of lengths 5, 12, and 13, what type of triangle is it?
A. Scalene
B. Right-angled
C. Equilateral
D. Isosceles
24. What is the result of 18 divided by 6?
A. 2
B. 3
C. 3
D. 4
25. If a parallelogram has a base of 10 units and a height of 8 units, what is its area?
A. 64 square units
B. 80 square units
C. 100 square units
D. 120 square units
26. What is the next prime number after 17?
A. 18
B. 19
C. 19
D. 20
27. Solve for x: 3x = 24
A. 6
B. 8
C. 8
D. 9
28. What is the value of 5 factorial (5!)?
A. 20
B. 120
C. 120
D. 150
29. If a rectangle has a length of 15 units and a width of 6 units, what is its perimeter?
A. 30 units
B. 36 units
C. 42 units
D. 48 units
30. What is the sum of the first 10 positive integers?
A. 45
B. 50
C. 55
D. 60
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