if probability of failure of an event is 32%.what is the probability of its sucess?

Changing the given percentage into decimals by dividing it by 100
= 32/100 =0.32
we know that the sum of the probability of an outcome in an event is 1
therfore the sum of probabilities of failure and success is also1.
1= probability of failure + probability of success 
let probability of success be x
1= 0.32 + x
1-0.32=x
x= 0.68
therefore probability of success is 68%.