ዘጠነኛ ክፍል mathematics ምን ያክል አንብባችኋል።

1. Which of the following best describes the notion of sets?
A) A collection of unrelated elements
B) A group of elements with a common property
C) A single element
D) A random assortment of numbers

2. What is the result of the operation of intersection between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set

3. Which of the following is an example of a rational number?
A) √2
B) -5
C) 3/4
D) π

4. What type of number is √2?
A) Rational
B) Integer
C) Irrational
D) Real

5. What is the sum of the interior angles of a convex polygon with 5 sides?
A) 540 degrees
B) 360 degrees
C) 720 degrees
D) 180 degrees

6. What is the ratio of perimeters of two similar plane figures if the ratio of their sides is 3:5?
A) 3:5
B) 5:3
C) 8:15
D) 15:8

7. In solving equations, what is the value of x in the equation 2x + 5 = 15?
A) x = 5
B) x = 6
C) x = 7
D) x = 8

8. Which of the following is an example of a linear inequality?
A) x² > 5
B) 3x + 4 < 10
C) √x ≥ 3
D) |x| = 2

9. What trigonometric ratio represents the ratio of the opposite side to the hypotenuse in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot

10. What is the sum of the exterior angles of a convex polygon with 7 sides?
A) 540 degrees
B) 360 degrees
C) 720 degrees
D) 180 degrees

11. Which of the following is a scalar quantity?
A) Velocity
B) Force
C) Mass
D) Displacement

12. What is the representation of a vector with magnitude 5 and direction due east?
A) 5i
B) 5j
C) 5i + 5j
D) 5i - 5j

13. How many degrees are in a full rotation in a two-dimensional vector space?
A) 180 degrees
B) 360 degrees
C) 90 degrees
D) 270 degrees

14. Which of the following is an example of a rational number?
A) √3
B) 2/3
C) -√5
D) π

15. What is the result of the operation of union between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set

16. What type of number is 5/7?
A) Rational
B) Integer
C) Irrational
D) Real

17. What trigonometric ratio represents the ratio of the adjacent side to the hypotenuse in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot

18. What trigonometric ratio represents the ratio of the opposite side to the adjacent side in a right-angled triangle?
A) Sin
B) Cos
C) Tan
D) Cot

19. Which of the following is an example of a linear equation?
A) x² = 9
B) 2x + 3 = 7
C) |x| = 4
D) √x = 2

20. What is the result of the operation of difference between two sets?
A) Elements that are common to both sets
B) All elements of the two sets combined
C) Elements unique to the first set
D) Elements unique to the second set

Answer

1. B 
2. A 
3. C 
4. C 
5. A 
6. A 
7. B 
8. B 
9. A 
10. B 
11. C 
12. A 
13. B 
14. B 
15. B 
16. A 
17. B 
18. C 
19. B 
20. C