What number when divided in half becomes zero?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

What does this rebus mean?

O
N
C
E
TIME

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

Look at the picture and find out which square is not linked with any of the other squares.

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?

Count the number of lines in the image below ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?