
KM4_Numerasi
Authored by KM4 363
Fun, Mathematics
7th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Terdapat nilai A = {5,6,7} sedangkan nilai B = {3, 4}, jadi nilai dari A ∪ B yaitu ….
{3}
{3, 4, 5, 6, 7}
{1, 3}
{2, 4}
Answer explanation
Gabungan (U) adalah semua unsur yang ada dalam dua atau lebih himpunan. jadi A U B semua himpunannya.
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jika M = {a, i, u, e, o} , N = {a, u, o}, nilai n dari (M ∪ N) yaitu ….
5
6
7
8
Answer explanation
M = {a, i, u, e, o}
N = {a, u, o}
M ∪ N = {a, i, u, e, o}
Nilai n (M ≦ N) = 5
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jika P = {1, 5} , Q = {1, 3, 5, 7}, maka nilai (P ∪ Q) adalah ….
P
Q
{0}
Ø
Answer explanation
Apabila
P = {1, 5}
Q = {1, 3, 5, 7}
Nilai dari P ∪ Q = {1, 3, 5, 7}
Maka hasilnya adalah {1, 3, 5, 7} = Q
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Maka nilai dari (A ∩ B) ialah ….
{4, 8, 10}
{1, 2, 3, 5, 6, 7, 9}
{3, 4, 5, 7, 8, 10}
{3, 5, 7}
Answer explanation
A = {1, 3, 5, 6, 7, 9}
B = {2, 3, 5, 7}
A ∩ B = {3, 5, 7}
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Di dalam kelas terdapat 30 siswa. 15 siswa yang diantaranya gemar melukis, 20 siswa lagi siswa gemar menyanyi dan siswa suka keduanya adalah 8. Lalu, jumlah dari siswa yang tidak suka keduanya adalah ….
3
4
5
6
Answer explanation
(A ∩ B) = 8 anak-anak
n (S) = ((A) + (B) – (A ∩ B)) + (T)
30 = (15 + 20-8) + n (T)
30 = 27 + n (T)
n (T) = 3
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Kelas VII-C dengan jumlah 35 siswa. Setelah selesai diseleksi terdapat 21 siswa yang menyukai pelajaran matematika, ada 20 siswa menyukai IPA serta 10 siswa suka keduanya. Jumlah siswa yang tidak menyukai keduanya adalah … siswa.
3
4
5
6
Answer explanation
S = 35 anak
M (Matematika) = 21 anak
B (Ipa) = 20 anak
(M ∩ B) = 10 anak-anak
Jumlah anak yang tidak menyukai keduanya …?
n (S) = (M) + (B) – (M ∩ B) + (T)
35 = (21 + 20-10) + n (T)
35 = 31 + n (T)
4 = n (T)
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Apabila diketahui S = {0, 1, 2, 3, …., 10}, A = {2, 3, 4, 5, 7} serta nilai B = {1, 3, 5, 7, 9}. Maka AB ialah …
{3, 5, 7}
{0, 6, 8, 9, 10}
{0, 1, 6, 8, 9, 10}
{0, 1, 6, 8, 10}
Answer explanation
S = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
A = {2, 3, 4, 5, 7}
B = {1, 3, 5, 7, 9}
AB = {0, 1, 6, 8, 9, 10}
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