Can you find a number that lies one third of the distance between 1/3 and 2/3?

Solve the puzzle by telling what does below picture means.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

You see me once in June, twice in November, and not at all in May. What am I?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

How is a fly different from a mosquito?

Why 1729 is a magic number? Answer Logically.