Q // 15% of the water from wells dug in the plain is not suitable for drinking, so if it becomes The intention is to drill 10 new wells. What is the probability? 1. All ten wells are not suitable for...

Q // 15% of the water from wells dug in the plain is not suitable for drinking, so if it becomes The intention is to drill 10 new wells. What is the probability? 1. All ten wells are not suitable for drinking. 2. All ten wells are drinkable. 3. Three or more wells are not suitable for drinking.