Question

you pick a card at random. 1 2 3 4 what is p(prime)? write your answer as a percentage rounded to the nearest tenth. %

Explanation:

Step1: Identify prime numbers

The prime numbers among 1, 2, 3, 4 are 2 and 3. So there are 2 prime numbers.

Step2: Calculate probability

The total number of cards is 4. The probability formula is $P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. So $P(\text{prime})=\frac{2}{4} = 0.5$.

Step3: Convert to percentage

To convert 0.5 to a percentage, we multiply by 100. So $0.5\times100 = 50.0\%$.

Answer:

50.0%