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

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Find out the number of circles in the given picture having Illusion

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Who always enjoys poor health?

In a classic wine shop, the list of three most popular wines are:
- The cost of 1 French wine bottle: 500$
- The cost of 1 German wine bottle: 100$
- The cost of 20 Dutch wine bottles: 100$

John entered the wine shop and he needs to buy
- All three types of wine bottles.
- Needs to buy Dutch wine bottles in multiples of 20.
- Need to buy 100 wine bottles in total.

John has only 10000$. How many wine bottles of each type, John must buy?

What type of tree can I carry in my hand?

How is the moon similar to a dollar?