If by green apples you mean Granny Smith, Bountiful apples, Diamond Jubilee or any other variety that is green in colour when ripe, then there is no harm at all in having 3 or more a day. However, if by green you're referring to unripe apples, then eating 3 can certainly be harmful.
2000 or 2500 for normal people
two
12 bananas and 12 apples
9
It is around 4-14 sevings a day.
Yes, it is still possible to drink 2 liters of water a day as well as eating green apples. Some people however, struggle to drink that much water but it is advisable to drink 2 liters every day and more in hot weather.
4 days
You should have five servings of fruit a day. It may or may not include apples. It decreases your chances of cancer, heart disease, obesity and diabetes.
You should have five fruit and vegetables in a day to keep healthy and active.
Actually no one hates Green Day.
3 apples a day