5 In a certain region, the probability that any given day in October is wet is 0.16 , independently of other days.
- Find the probability that, in a 10-day period in October, fewer than 3 days will be wet.
- Find the probability that the first wet day in October is 8 October.
- For 4 randomly chosen years, find the probability that in exactly 1 of these years the first wet day in October is 8 October.