You see a boat with people on it. It hasn’t sunk, but when you look again, you don’t see a single person on the boat. Why?
Because all the people were married (so not “single”).
I’m thinking of a number. If you double it, you get 10. What is the number?
5
What comes next in the sequence: 1, 1, 2, 3, 5, 8, … ?
13 (Fibonacci sequence).
Rearrange the letters “LATVIA” to form one English word.
VITAL.
I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?
An echo.