A website offers a coupon such that each customer has a 15/%15%15, percent chance of getting the coupon each day they visit the site. Aya visits the website for 666 consecutive days.

0.62

Complete question:

What is the probability that at Aya will be offered a coupon on at least one of the days she visits the website?

Step-by-step explanation:

assuming,

A: Aya gets a coupon one day. P (A) = 0.15

B: Aya doesn't get a coupon one day. P (B) = 1 - 0.15 = 0.85

Aya doesn't get a coupon in any of 6 days = P (B) ^6 = 0.85^6 = 0.38

The probability of Aya getting at least 1 coupon after 6 days is the complement of don't getting any coupon after 6 days, that is:

1 - P (B) ^6 = 1 - 0.38 = 0.62