You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

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?

I always drive my customer away.

Who am I?

What makes this number unique: 8,549,176,320?

I can be cracked, made, told, and played. What am I?

81 x 9 = 801. What must you do to make the this equation true?

Remove two matchsticks to make the below equation correct.

What does this mean?

CCCCCCC

What has many keys but can’t open a single lock?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?