Question

Omar ordered his sister a birthday card from a company that randomly selects a card from their inventory. The company has 21 total cards in inventory. 14 of those cards are birthday cards. What is P(not a birthday card)?

Answer 1

Answer:

7

Step-by-step explanation:

21-14=7

Answer 2

Answer:

0.33

Step-by-step explanation:

Probability=  

Number of possible outcomes

Number of favorable outcomes

​  

There are 7 favorable outcomes (the 21 - 14 = 7cards that are not birthday cards).

There are 21 possible outcomes (the 21 total cards).

P(not a birthday card)=  21

                                      7                   ≈0.33