There is an infinite supply of cards numberd from 1 to 10 and we can continuously sum up that numbers as close as possible to 21, if sum of numbers is greater than 21 then it will be a bust and player will loose but there is a player who decided that if the number is less than 19 he will continue to sum up numbers but if it is >= 19 he will not choose any card further, what is the probability that he will lose or there will be a bust.