TS EAMCET 04 May 2019 Shift 2 Solved Paper

A computer program has two modules X and Y and errors in them occur independently. X has an error with probability 0.1 and Y has an error with probability 0.3 . If an error in X alone causes the program to crash with probability 0.5, an error in Y alone causes the program to crash with probability 0.7 and an error in both X and Y cause the program to crash with probability 0.8, then the probability' that the program is crashed is