By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

I have an eye but still cannot see.

Who am I?

What Adam and Eve do not have but the rest of the people have?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

In a kingdom, King George did not allow any citizen to visit the world outside. Also, only a person with proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check the every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter. How?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Which tank will fill first?

What goes up but never comes down?