Question

2) A bag contains 6 black and 8 white marbles. One marble is drawn at random.What is the probability that the marble drawn is black? *

Answer 1

The Probablity is calculated as

$P(b)=\frac{b}{\text{total}}$

Here P(b) is the probablity of black marble and b is the number of black marbles. So

$P(b)=\frac{6}{6+8}=\frac{6}{14}=\frac{3}{7}$

So out of the seven balls drawn, three will be black.