If the 1th of a particular month falls on a Friday, what exact day of the week will the 21th of the same month be?

If the 4th of a particular month falls on a Thursday, what exact day of the week will the 23th of the same month be?

If the 1th of a particular month falls on a Thursday, what exact day of the week will the 20th of the same month be?

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?

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

Identify the next mathematical term in the following geometric sequence: 2, 4, 8, 16, ?