Can anyone tell me a word in the English dictionary which has a silent 'z'?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What do you call a fish without an eye?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

Why do we preferably have round manhole covers and not square ones?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Which tank will fill first?

What month of the year has 28 days?

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

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