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?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Solve the puzzle by telling what does below picture means.

What begins with T, ends with T, and has T in it?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Can you place three balls such that the equation shown in the picture holds true?

How many times can you subtract the number two from the number fifty?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?