Can you make four (4) nines (9) equal 100?

What do you see in the image below

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

I am white when I am dirty, and black when I am clean. What am I?

Can you fill the blank with the correct number?

6 30 870 756030 _____

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 has 88 keys?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

How many triangles can you find in this given picture?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?