Question

A stack of 30 science cards includes a review card for each of the following 10 insects 8 trees eight flowers and four birds what is the probability of randomly selecting a bird?

Answer 1

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Write the formula for Probability

$Probability=\frac{number\text{ of required outcomes}}{number\text{ of total possible outcomes}}$

STEP 2: Write the number of outcomes

Number of birds = 4

Number of total flashcards = 30

STEP 3: Find the probability

By substitution,

$Probability=\frac{4}{30}=\frac{2}{15}$

Hence, the probability is 2/15