Neither of those are original riddles, and you've already given us the answers to them. I don't see the logic behind making an entirely new thread for these two riddles rather than just posting them in a preexisting riddle thread.
If you want your thread to survive, suggestions are to write the riddles in poetry form, so they pass off as Art. Limericks or sonnets can serve a dual purpose of being Art and a riddle.
And of course, make it original. Just a thought if you want to continue this properly.
I know one really complicated : A doctor and a boy are fishing . The boy is the doctor's son,but the doctor isn't the boys father.Who is the doctor ? Answer : ???????????
Sorry I didn't knew that one was rotten How about this : Mary's mother,Mrs Jones,has four children.The oldest,a boy,is called North.The next oldest,a girl,is called South.The third child,a boy,is called East.The youngest child is another girl.What's her name ?
Mary. Again, not an original riddle. If you want to post preexisting riddles somewhere, does it not make the most sense to post it in a preexisting riddle thread?
Here's one : A commercial says :This amazing small computer can do mathematics and write in all languages !It has a special 'delete' feature so you can correct mistakes !And you don't need electricity to use it !The price ? No more than the price of a newspaper ! What is the TV commercial selling ?