Look for the last double drawn, say 155
Next double is likely to be one of the below.
Then play box 110,111,112,113,114,115,116,117,118,119,
Ply for next 7 days, after 7 days increase bet amount to so as to be in profit. It works for many states. Yoy get double win if the no drawn is 115 or 511, and if 111/555 is drawn you have a jackpot.