In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Readers with high attention to detail can spot the cheater in the exam hall in 5 seconds. Are you one of them? Test your visual skills now!

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

How many letters are in the alphabet?

How many sides does a circle have?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Riddle me this, Riddle me that,
What am I? I am made of wood, but you can't see me down?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

During which month do people sleep the least?