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?

What does this rebus puzzle means ?

A father's child, a mother's child, yet no one's son.

Who am I?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

You can see three almost identical images below. Can you spot the odd one out from them?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

How is the moon similar to a dollar?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?