What is the word or phrase?

What does this Rebus Picture mean?

How can you make number one disappear by adding something to it?

I am an odd number. Take away a letter and I become even. What number am I?

How many triangles can you find in this given picture?

I have feet, but no legs. Which animal Am I?

If an electric train is travelling south, then which way is the smoke going?

A bomb exploded in a room full of married couples and no one died. How?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?