3 The probability that Janice will buy an item online in any week is 0.35 . Janice does not buy more than one item online in any week.
- Find the probability that, in a 10 -week period, Janice buys at most 7 items online.
- The probability that Janice buys at least one item online in a period of \(n\) weeks is greater than 0.99 . Find the smallest possible value of \(n\).