Brain Teasers #6

0.  (Carry-over from last week).  John and James are twins (to each other).  John celebrated his fourth birthday today, and James celebrates his first birthday tomorrow.  How can this be – and what day of the year must it be??
1.  (An old classic)  A frog is at the bottom of a 30 foot well.  Each day she is able to jump up 5 feet, but during the night, she slides down 3 feet.  How many days will it take her to jump out of the well?  [Let’s just ignore the fact that she might starve to death first.  :-)] 
2.  Mary has a new car with four new tires (duh!) , and one new fully functional spare tire.  She has the tires rotated regularly, so that after 100,000 miles each tire will have been driven the same number of miles.  For how many miles will each tire be used?
3.  (One of my VERY favorites!!)  Mr. Smith says ‘Brothers and sisters have I none, but this man’s father is my father’s son.”  What is the relationship between Mr. Smith and the person to whom he refers?

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Submit Answers!  There are NO tests and the answers are NOT graded, so lighten up!  🙂  If you want to submit  your answers to either or both of these, PLEASE feel free to do so!!  

You can do this 3 ways:  1)  Use the Leave A Reply section below (though I may not make it public until after Thursday noon);   2) reply to (or contact) me individually by e-mail; or 3) by using the Contact Form link.   Except for using Leave a Reply, your anonymity is protected! 🙂
Next time around, I will share those who had correct solutions.  I may share FIRST correct submission, and depending on numbers and difficulties, I may share total number of submissions (but no names for incorrect submissions).  
Reminder:  Deadline for submissions (at least for recognition) is Thursday noon.