Question

SALES PROMOTIONS At a grand opening event, a store allows customers to choose an

envelope from a bag. Ten of the envelopes contain store coupons, 8 envelopes contain
gift cards, and 2 envelopes contain $100. What is the probability that a customer selects
an envelope with a gift card or an envelope with $100?

Answer 1

1/2 or 0.5

Explanation:

I'm not the best at explaining but you take the sum of the individual properties and you'll get the answer

Answer 2

The probability of a customer selecting an envelope with a gift card or an envelope with $100 is P(GC or $100) = 10/20 + 8/20 = 18/20 = 0.9, which means that there is a 90% chance that the customer will select an envelope with a gift card or an envelope with $100.