a problem is give
given : let a , b and c be three students whose chances of solving a problem is given i.e , p(a) = , p(b) = and p(c) = . p() = , p() = and p()= to find: the probability that the problem is solved .here , p(the problem is solved) = 1 - p(the problem is not solved)= 1- p( )= 1 – [p( ) p( ) p( )]= 1- []= 1 - = therefore , the probability that the problem is solved is .
it looks like you are right, this appears to be an issue. i will make sure that it gets fixed soon. it is a good option if you are still facing the issue, try this It's going to be sheer luck anyone is running that setup so try this. Break the problem down to smaller steps. If a step can't be accomplished then it's too big a step. Break it down further. i am to resolve the issue.

thanx!! lose, surrender. <https://repl.it> might be a little more forgiving. what challenge is that? and that one is fixed now. ^^ please You use too many {