CAN YOU SOLVE THIS !!!!!

1) Can you place six X's on a Tic Tac Toe board without making 

    three-in-a-row in any direction?

2) Nine dots are arranged in a three by three square.
    Connect each of  the nine dots using only four straight lines and 
    without lifting your pen from the paper.

Image for 1st and 2nd puzzle repectively :

3) There are 3 glasses filled with water.

     There are 3 glasses which are empty.

     All 6 glasses are arranged in order as shown below.

   Now the task is:
   Just move only one glass such that the arrangement 

   becomes alternate.

   By alternate i mean one glass filled then one glass empty...so

   (filled empty filled empty filled empty - this is the order)

   But remember you have to move only one glass.

ANSWERS WILL BE POSTED LATER AFTER YOU HAVE RACKED YOUR BRAINS..