1.
Pada diagram Venn di bawah ini, daerah yang diarsir merupakan …
Correct Answer
C. C – (A È B)
Explanation
The correct answer is C - (A ∪ B). This means that the shaded region in the Venn diagram represents the elements that are in set C but not in the union of sets A and B.
2.
Diantara sistem pertidaksamaan linear di bawah ini yang memiliki daerah penyelesaian tidak berada di kuadran II adalah …
Correct Answer
D. 4x – 3y ≥ 12
Explanation
The inequality 4x - 3y ≥ 12 does not have a solution in the second quadrant because the coefficient of y is negative (-3y). In the second quadrant, the y-coordinate is positive, so when multiplied by a negative coefficient, it would result in a negative value. Therefore, the inequality cannot be satisfied in the second quadrant.
3.
Diketahui a*b#c = a+b/b-c. Jika 8*x#2 = 6, maka nilai x = …
Correct Answer
A. 4
Explanation
The equation given is a*b#c = a+b/b-c. To find the value of x, we substitute the given values into the equation. We have 8*x#2 = 6. Plugging in the values, we get 8+2/2-2 = 6. Simplifying further, we have 10/0 = 6. However, division by zero is undefined, so this equation has no solution. Therefore, the answer is not available.
4.
Diameter lingkaran besar pada gambar di bawah ini adalah 12. Luas daerah yang diarsir adalah …
Correct Answer
B. 24π
Explanation
The diameter of a circle is the distance across the circle passing through its center. In this case, the diameter of the large circle is given as 12. The area of a circle is calculated using the formula A = πr^2, where r is the radius of the circle. Since the diameter is twice the radius, the radius of the large circle is 12/2 = 6. Therefore, the area of the large circle is π(6^2) = 36π. The shaded area is half of the area of the large circle, which is 36π/2 = 18π. Therefore, the correct answer is 18π.
5.
Nilai a+b+c+d pada gambar di bawah ini adalah …
Correct Answer
B. 230
Explanation
The sum of a+b+c+d in the given figure is 230. This can be determined by adding the values in the figure: 360+130-180+90=230.
6.
Ada enam orang dalam ruangan yang belum saling mengenal. Mereka saling berkenalan dengan cara berjabat tangan sekali dengan setiap orang. Banyak jabatan tangan yang akan terjadi sebanyak …
Correct Answer
C. 15
Explanation
Each person needs to shake hands with every other person in the room. If there are n people in the room, each person needs to shake hands with n-1 other people. In this case, there are 6 people, so each person needs to shake hands with 5 others. However, if we count the number of handshakes for each person, we would be counting each handshake twice (once for each person involved). Therefore, we divide the total number of handshakes by 2 to get the correct answer. In this case, (6*5)/2 = 15.
7.
Sebuah kotak berisi 4 bola hijau dan 2 bola merah. Dari dalam kotak pengambilan dua bola berurutan. Peluang mendapatkan sebuah bola merah pada pengambilan pertama dan bola hijau pada pengambilan kedua adalah …
Correct Answer
B. 1 dan 3
Explanation
The probability of getting a red ball on the first draw and a green ball on the second draw can be calculated by multiplying the probability of getting a red ball on the first draw (2 red balls out of 6 total balls) by the probability of getting a green ball on the second draw (4 green balls out of 5 remaining balls). Therefore, the correct answer is 1 and 3.
8.
Dua buah bilangan kuadrat kurang dari 20. Jika selisih kedua bilangan tersebut adalah bilangan prima, maka jumlah kedua bilangan itu yang mungkin adalah …
(1) 17
(2) 13
(3) 10
(4) 5
Correct Answer
C. 2 dan 4
Explanation
The question states that there are two square numbers that are less than 20. If the difference between these two numbers is a prime number, then the possible sum of these two numbers is either 2 or 4.
9.
Sebuah garis g melalui titik (-3,5) dan sejajar dengan garis 2x+3y=14. Diantara titik di bawah ini yang tidak dilalui oleh garis g adalah …
(1) (0,4)
(2) (1,5)
(3) (2,6)
(4) (3,7)
Correct Answer
E. Semua benar
Explanation
The line g is parallel to the line 2x+3y=14. Since the slope of g is the same as the slope of the given line, any point that satisfies the equation 2x+3y=14 will also lie on g. Therefore, all of the given points (1) (0,4), (2) (1,5), (3) (2,6), and (4) (3,7) do not lie on the line g.
10.
Median, modus dan range dari empat bilangan asli kurang dari 10 adalah 8. Manakah hubungan yang benar antara kuantitas P dan Q berikut berdasarkan informasi yang diberikan?
P
Q
Rata-rata keempat bilangan tersebut
6,5
Correct Answer
C. P = Q
Explanation
Based on the given information, the median, mode, and range of the four natural numbers less than 10 are 8. This means that two of the numbers must be 8, and the other two numbers can be any combination of the remaining numbers less than 8. Therefore, the quantity P represents the two numbers that are 8, and the quantity Q represents the other two numbers. Since both P and Q have the same numbers, the relationship between P and Q is that they are equal.
11.
Pada sebuah bak air, jika kran A dibuka maka bak akan terisi penuh dalam waktu 6 jam. Jika kran B dibuka maka bak itu akan kosong dalam waktu 8 jam. Jika kedua kran dibuka maka bak itu akan penuh dalam waktu x jam.
Manakah hubungan yang benar antara kuantitas P dan Q berikut berdasarkan informasi yang diberikan?
P
Q
x
12
Correct Answer
A. P > Q
Explanation
Based on the information given, if only kran A is opened, the bak will be filled in 6 hours. If only kran B is opened, the bak will be emptied in 8 hours. Therefore, the flow rate of kran A is faster than kran B. So, if both kran A and kran B are opened, the bak will be filled faster than 6 hours. Hence, P (time taken to fill the bak with both kran A and kran B opened) is greater than Q (time taken to fill the bak with only kran A opened).
12.
Axel, Alan dan Anggi memiliki banyak buku tulis yang berbeda. Banyak buku Axel adalah 3 kali buku Alan sedangkan banyak buku Anggi adalah 4 buah. Manakah hubungan yang benar antara kuantitas P dan Q berikut berdasarkan informasi yang diberikan?
P
Q
Banyak buku Alan
15
Correct Answer
D. Informasi yang diberikan tidak cukup untuk memutuskan salah satu dari tiga pilihan di atas
Explanation
The given information states that Axel has 3 times the number of books as Alan, and Anggi has 4 books. However, there is no information given about the quantity of books that Alan has. Therefore, we cannot determine the relationship between P and Q based on the given information.
13.
Perhatikan gambar di bawah ini!
Titik Q merupakan titik singgung lingkaran dengan garis QR. Berapakah Panjang PR?
(1) Luas lingkaran P = 64π
(2) Panjang QR = 12
Correct Answer
C. DUA pernyataan BERSAMA-SAMA cukup untuk menjawab pertanyaan, tetapi SATU pernyataan SAJA tidak cukup
Explanation
The answer is D because both statements together are needed to determine the length of PR. Statement (1) gives the area of the circle, but without the radius or diameter, we cannot determine the length of PR. Statement (2) gives the length of QR, but without any information about the circle, we cannot determine the length of PR. Therefore, both statements are necessary to solve the problem.
14.
Perhatikan gambar di bawah ini.
Berapakah nilai x+y?
(1) CD ^ AE
(2) ACE segitiga sama kaki dengan CA = CE
Correct Answer
B. Pernyataan (2) SAJA cukup untuk menjawab pertanyaan, tetapi peryataan (1) SAJA tidak cukup
Explanation
The answer states that statement (2) alone is sufficient to answer the question, but statement (1) alone is not sufficient. This implies that the information provided in statement (2) is enough to determine the value of x+y, while the information provided in statement (1) is not necessary or relevant in finding the value of x+y.
15.
Diketahui x, y dan z merupakan bilangan prima kurang dari 10 yang diurutkan dari yang terkecil. Berapakah nilai y?
(1) Salah satu bilangannya adalah bilangan kuadrat.
(2) Jumlah ketiga bilangan adalah 14
Correct Answer
B. Pernyataan (2) SAJA cukup untuk menjawab pertanyaan, tetapi peryataan (1) SAJA tidak cukup
Explanation
The question asks for the value of y, given that x, y, and z are prime numbers less than 10 and are sorted from smallest to largest. Statement (1) alone is not sufficient to determine the value of y because it only states that one of the numbers is a square number, but it does not provide any specific information about y. However, statement (2) alone is sufficient to determine the value of y because it states that the sum of the three numbers is 14. Since x, y, and z are prime numbers less than 10, the only possible combination that satisfies this condition is x=2, y=5, and z=7. Therefore, the value of y is 5.