Question

87. A bag contans 3 white and a black balls. A ball is
drawn at random. If it is write , it is removed & Then
second ball is drown. If the first ball drawn is black,
it is put back and two more
black balls are added and
then a second ball is drawn. What is the probability that
the
second ball is white ?

Answer 1

Answer:

I'm sorry next time ok or other days tomorrow