What can you catch but never throw?

What has 13 hearts but no other organs?

What month of the year has 28 days?

How many triangles are there on the puzzle below?

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?

What do you call a fish without an eye?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Can you find the missing piece of the Porsche?