In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

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?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

The dirtier I get, the whiter I look. Who am I?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What seven-letter word has hundreds of letters in it?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

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