One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

A sundial has the fewest moving parts of any timepiece. Which has the most?

It is always ahead of me yet I can never see it. What is it?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

I look at you, you look at me, I raise my right, you raise your left. What am I?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

I look at you, you look at me I raise my right, you raise your left. What am I?

Who has married many women but was never married?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?