Can you identify if it's a murder or a suicide ?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

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?

Can you place six X (crosses) in below board without making three in a row in any way ?

Can you write down eight eights so that they add up to one thousand?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.