If two's company, and three's a crowd, then whats four and five ?

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?

Can you count the number of triangles in the given picture?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Count the number of triangles in the below picture?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

By what process could you make a 'Tea-Table' into food?

Find the last number in the series below:

voN luJ yaM raM ---

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?