A die is tossed Find the odds against rolling a number great

A die is tossed. Find the odds against rolling a number greater than 4. The odds against rolling a number greater than 4 are (Simplify your answer.)

number greater than 4 are 5 and 6 , so probability of getting a number greater than 4 is 2/6=1/3

so odd against number greater than 4 is 1-1/3=2/3