What is the acute angle formed between the hour hand and the minute hand of a standard analog clock at exactly 1:00?

What is the acute angle formed between the hour hand and the minute hand of a standard analog clock at exactly 6:40?

What is the acute angle formed between the hour hand and the minute hand of a standard analog clock at exactly 1:50?

Person A is exactly 3 years older than Person B. If the sum of their current ages is 33, what is Person A's current age?

Person A is exactly 5 years older than Person B. If the sum of their current ages is 47, what is Person A's current age?

Premise 1: All phones are cups. Premise 2: All cups are books. Which conclusion definitely follows?

Premise 1: No dogs are rocks. Premise 2: All phones are dogs. Which conclusion definitely follows?