Keyboard words are not in alphabetical order, Why?

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

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

John was piloting a plane behind a car but was never able to overtake it. Why?

What does the below image rebus riddle means ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?