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?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What has one letter and starts with an E?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

What does the below rebus riddle means?

Solve the counting riddle by identifying the number of triangles in the given picture.

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What always comes into a house through the keyhole?

I am sure no one can have two things for dinner. what are they?