What is more useful when it is broken?

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

When is the top of a mountain similar to a savings account?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

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

Which part of London exists in France as well ?

What happened when the wheel was invented?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?