A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

What can you see in the middle of March and April that you can never see in any other month?

Complete the table series riddle by finding the number that can replace "??".

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

What is the difference between a jeweller and a jailer?

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