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

Who am I?

What does below rebus means ?

What kind of band never plays music?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

If an electric train is travelling south, then which way is the smoke going?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Which five letter word can be added at the end of below word to form a
valid word?

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In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

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?