What always comes into a house through the keyhole?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

Readers with the highest levels of visual skills can find three differences between the pictures of a cow on the farm in 14 seconds. Can you? Test your visual skills now!

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

You can see three almost identical images below. Can you spot the odd one out from them?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?