What happened when the wheel was invented?

How many triangles are there on the puzzle below?

why number 8549176320 is one of a kind?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What has to be broken before you can use it?

Before Mount Everest was discovered, what was the highest mountain in the world?

Replace the question mark with the number below given a simple math problem.

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

500 women soldiers are arranged in an array of ten rows and fifty columns in accordance with their respective heights. Now, the tallest woman from each row is asked to move out in the front. From them, the shortest one is labelled as Alpha. They are then asked to resume their original position.

Now, the shortest woman in each column is asked to come out in front. The tallest among them is labelled as Beta.

Can you find out if Alpha will be taller or Beta?