I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

They are three errirs in this question. Can you find them?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

What's the only room from which no one can enter or leave

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?