Need Help with Haskell

[manmeet29]

Hii...i am completely new to Haskell...i tried a lot to understand the thing but failed....can anybody help me with the following problem ASAP..

I need to produce an infinite list of all of the rational numbers between zero and one. Each value should occur exactly once in the list but can be in any order.

and print the following results:

1. The list of the first 20 rational numbers in your list. These values will depend on the order you choose for the rationals.
2. The number of rational numbers the exist in the list of all rational numbers before the value 4%17

[Trinithis]

Some useful library stuff you can import:
http://haskell.org/ghc/docs/latest/h...ata-Ratio.html
http://haskell.org/ghc/docs/latest/h...a-List.html#10

How to get your rationals:
http://www.homeschoolmath.net/teachi...-countable.php