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.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

What has 88 keys?

Which is heavier: a ton of bricks or a ton of feathers?

How many sides does a circle have?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

Which is faster, Heat or Cold ? Explain.

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?