Replace the question mark with the correct number below.

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?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Can you spot the hidden girl in the picture below?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

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

Count the number of triangles in the given picture.

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?