in the first 25 numbers displayed, there 5 each of 5 different colors.
once u pick the color, they place 5 numbers of that color in 5 different houses. when u pick the house, they know the number.
all the other thing abt choosing a color, door is magicians crap.
next time when u play such games, be careful abt virus attacks on ur pc.
భవాని మల్లాది 
Good time pass !
thank you mamayyagaru
this is just a permutation and combination trick
the different groupings would reveal the answer very easily
chaala simple technique.
in the first 25 numbers displayed, there 5 each of 5 different colors.
once u pick the color, they place 5 numbers of that color in 5 different houses. when u pick the house, they know the number.
all the other thing abt choosing a color, door is magicians crap.
next time when u play such games, be careful abt virus attacks on ur pc.
thank you for your suggestion and the logic
baagundandee