Question

a bag contains 30 red, 40 blue, and 50 white buttons. you pick one button at random. find the probability that it is not blue. p(not blue) = \frac{?}{}

Explanation:

Step1: Calculate total number of buttons

Total buttons = \(30 + 40+50=120\)

Step2: Calculate number of non - blue buttons

Non - blue buttons = \(30 + 50 = 80\)

Step3: Calculate probability

Probability \(P(\text{not blue})=\frac{\text{Number of non - blue buttons}}{\text{Total number of buttons}}=\frac{80}{120}=\frac{2}{3}\)

Answer:

\(\frac{2}{3}\)