Question

A fair spinner has 9 equal sections 3 red 2 blue 4 green it is span twice what’s the probability of getting blue both times.

Answer 1

Given $P(red)=\dfrac{3}{9}, P(blue)=\dfrac{2}{9}, P(green)=\dfrac{4}{9}$

Then

$$P(blue\ and\ blue)=\dfrac{2}{9}(\dfrac{2}{9})=\dfrac{4}{81}$$

The probability of getting blue both times is $\dfrac{4}{81}.$