Question

a bag contains 4 white and 6black balls one ball is drawn and laid aside without noticing iys colour. another ball is then drawn what is the probability that the second ball is black

Answer 1

yAnswer

p(E) = 6/9
= 2/3

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Answer 2

If the ball taken out is black then there are 5 black balls.

Now probability = 5/9.

Is the ball taken out is white there are 6 black balls.

So probability = 6/9 = 2/3.

:)