"If the probability of A to fall in an examination   is `1/5` and that of   B is `3/(10)dot`
Channel: Doubtnut
Date: 2020-07-05

"If the probability of A to fall in an examination
 
  is `1/5`
 and that of
 
  B is `3/(10)dot`
 then, the
 
  probability that either A or B fails is
 a. 1/2
 
  b. 11/2 c. 19/50 d. none of these"