Ulangan Harian 1 : Logika Matematika

1. Diketahui premis-premis sebagai berikut:Premis 1 : Jika hari ini hujan deras, maka Andi tidak keluar rumahPremis 2 : Andi keluar rumahKesimpulan yang sah dari premis-premis tersebut adalah.....

Hari ini hujan deras

Hari ini hujan tidak deras

Hari ini hujan tidak deras atau Andi tidak keluar rumah

Hari ini hujan tidak deras dan Andi tidak keluar rumah

Hari ini hujan deras atau Andi tidak keluar rumah

The conclusion that can be validly drawn from the given premises is "Hari ini hujan tidak deras". This is because the first premise states that if it is raining heavily today, then Andi will not leave the house. The second premise states that Andi did leave the house. Therefore, we can conclude that it is not raining heavily today.

Explanation

The conclusion that can be validly drawn from the given premises is "Hari ini hujan tidak deras". This is because the first premise states that if it is raining heavily today, then Andi will not leave the house. The second premise states that Andi did leave the house. Therefore, we can conclude that it is not raining heavily today.

2. Diketahui premis-premis berikut:Premis 1 : Jika Andi ulang tahun maka semua kawannya datangPremis 2 : Jika semua kawannya datang maka ia mendapatkan kadoPremis 3 : Andi tidak mendapatkan kadoKesimpulan yang sah dari ketiga premis tersebut adalah......

Andi ulang tahun

Semua kawannya datang

Andi tidak ulang tahun

Semua kawan tidak datang

Ia Mendapat kado

The valid conclusion from the given premises is that Andi did not have a birthday. This conclusion can be drawn because if Andi had a birthday, then all of his friends would have come (Premise 1), and if all of his friends came, then he would have received a gift (Premise 2). However, the conclusion states that Andi did not receive a gift (Premise 3), which implies that he did not have a birthday.

Explanation

The valid conclusion from the given premises is that Andi did not have a birthday. This conclusion can be drawn because if Andi had a birthday, then all of his friends would have come (Premise 1), and if all of his friends came, then he would have received a gift (Premise 2). However, the conclusion states that Andi did not receive a gift (Premise 3), which implies that he did not have a birthday.

3. Ingkaran dari pernyataan " Semua makhluk hidup memerlukan air dan oksigen" adalah....

Semua makhluk hidup tidak memerlukan air atau oksigen.

Ada makhluk hidup memerlukan air dan oksigen.

Ada makhluk hidup tidak memerlukan air atau tidak perlu oksigen.

Semua makhluk hidup tidak memerlukan air dan oksigen.

Ada makhluk hidup memerlukan air tetapi tidak perlu oksigen.

The correct answer suggests that there are living organisms that do not require water or oxygen for survival. This implies that not all living creatures have the same requirements for sustenance.

Explanation

The correct answer suggests that there are living organisms that do not require water or oxygen for survival. This implies that not all living creatures have the same requirements for sustenance.

4. " Jika Ardi dapat mengerjakan soal try out ini dengan benar maka dia siap menghadapi ujian nasional". Pernyataan yang ekuivalen dengan pernyataan di atas adalah ….

Jika Ardi tidak siap menghadapi ujian nasional maka dia tidak dapat mengerjakan soal try out ini dengan benar.

Jika Ardi siap menghadapi ujian nasional maka dia dapat mengerjakan soal try out ini dengan benar.

Jika Ardi tidak dapat mengerjakan soal try out ini dengan benar maka dia tidak siap menghadapi ujian nasional.

Jika Ardi tidak dapat mengerjakan soal try out ini dengan benar maka dia siap menghadapi ujian nasional.

Jika Ardi dapat mengerjakan soal try out ini dengan benar maka dia tidak siap menghadapi ujian nasional.

The given correct answer can be explained as a logical implication. It states that if Ardi is not ready for the national exam, then he will not be able to solve the try out questions correctly. This can be understood as a cause and effect relationship, where Ardi's lack of preparation leads to his inability to answer the try out questions accurately.

Explanation

The given correct answer can be explained as a logical implication. It states that if Ardi is not ready for the national exam, then he will not be able to solve the try out questions correctly. This can be understood as a cause and effect relationship, where Ardi's lack of preparation leads to his inability to answer the try out questions accurately.

5. Ingkaran pernyataan "Jika semua anggota keluarga pergi, maka semua pintu rumah dikunci rapat" adalah.....

Jika ada angota rumah yang tidak pergi maka ada pintu rumah ang tidak dikunci rapat

Jika ada pintu rumah yang tidak kunci rapat maka ada anggota keluarga yang tidak pergi

Jika semua pintu rumah ditutup rapat maka semua anggota keluarga pergi

Semua anggota keluarga pergi dan ada pintu rumah yang tidak dikunci rapat

Semua pintu rumah tidak dikunci rapat dan ada anggota keluarga yang tidak pergi

The correct answer states that "All family members leave and there is a door that is not securely locked." This means that if all family members leave, it is necessary for there to be a door that is not securely locked. In other words, if all family members are not present, then all doors will be securely locked.

Explanation

The correct answer states that "All family members leave and there is a door that is not securely locked." This means that if all family members leave, it is necessary for there to be a door that is not securely locked. In other words, if all family members are not present, then all doors will be securely locked.