I am currently teaching myself some maths but I have found these two questions on the internet, and I'm completely stuck.

The questions are:

1.A man whose birthday was January 1st died on Feb 9th 1992. He was

years of age in the year

for some interger

. In what year was he born?

2. If

and

are both prime numbers, find, with justification, all possible values of

.

I think that question 1 is to do with quadratics and you can tell that if

is

, then

would be

which looks to be the most sensible, although I do not know where to go. Question 2 I don't really know where to start.

These are both really nagging me and I cannot get the answers.

Thanks so much for any help given!