Every time I eat peanuts, my throat itches. Today, I ate peanuts, and my throat started itching. I must be allergic to peanuts.

The streets are wet this morning. It probably rained last night.

In the past, students who studied for at least three hours a day tended to perform well on exams. Since I studied for four hours, I will likely do well on my test.

If it is snowing, the temperature must be below freezing. It is snowing outside. Therefore, the temperature is below freezing.

After observing that swans in the park are white, I conclude that all swans must be white.

I hear barking in the backyard, and I don’t own a dog. A neighbor’s dog must have wandered into my yard.

All men are mortal. Socrates is a man. Therefore, Socrates is mortal.

I’ve seen many teenagers use their phones constantly. Therefore, most teenagers probably spend a lot of time on their phones.

The power is out, and my neighbors' houses are also dark. The most likely explanation is that there is a power outage in the area.