Question

Omar ordered his sister a birthday card from a company that randomly selects a card from their inventory. The company has a total of 21 cards in inventory, and 14 of those cards are birthday cards. What is the probability of selecting a card that is not a birthday card? If necessary, round your answer to 2 decimal places.

Answer 1

The probability of selecting a card that is not a birthday card from the inventory is 0.33, which means there is a 33% chance of selecting a non-birthday card.

Step-by-step explanation:

The student's question is about calculating the probability of selecting a card that is not a birthday card from a company's inventory of cards. Given that there are 21 cards in total and 14 of these are birthday cards, there must therefore be 21 - 14 = 7 cards that are not birthday cards. To find the probability of selecting a non-birthday card, you would divide the number of non-birthday cards by the total number of cards.

The calculation would be probability = number of non-birthday cards / total number of cards = 7 / 21. Thus, the probability of selecting a non-birthday card is approximately 0.33, or 33%, after rounding to two decimal places.