Question

A bag contains equal no.of white and black balls, The total number of balls in the bag is $12$. Four balls are drawn at random from the bag at random with replacement

The probability all the four are black is

Answer 1

The probability of picking balls is independant to each other

The probability of picking black balll at one event is $\frac{6}{12}=\frac{1}{2}$

The probability of picking four black balls is $\frac{1}{8}$