I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

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

What occurs twice in a week, once in a year but never in a day?

Take one out and scratch my head, I am now black but once was red. What am I?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.