Answer: [tex]\bold{a.\quad \dfrac{1}{4}}[/tex]
Step-by-step explanation:
Since it is already given that the number is a 4 and each of the four colors only has one 4, then the probability for green is:
[tex]P=\dfrac{\text{number of green 4's}}{\text{total number of 4's}}=\dfrac{1}{4}[/tex]
If you wanted to find the probability that it is a four and it is green then you would calculate the probability as:
[tex]P=\dfrac{\text{number of 4's}}{\text{total number of numbers}}\times \dfrac{\text{number of greens}}{\text{total number of colors}}\\\\\\.\ =\dfrac{4}{40}\times\dfrac{1}{4}\\\\\\.\ =\dfrac{1}{40}[/tex]
