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.

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

If eleven plus two equals one, what does nine plus five equal?

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

What has many keys but can’t open a single lock?

What has to be broken before you can use it?

What word begins and ends with an E, but has only one letter?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?