you spin the spinner once. what is p(not prime)? write your answer as a fraction or whole number.

Answer:

$\frac{2}{3}$

Explanation:

Step1: Identify prime - non - prime numbers

The numbers on the spinner are 4, 5, 6. Prime numbers among them are 5. Non - prime numbers are 4 and 6.

Step2: Calculate total and non - prime numbers

There are 3 total numbers on the spinner. There are 2 non - prime numbers.

Step3: Calculate the probability

The probability formula is $P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. So $P(\text{not prime})=\frac{2}{3}$.