Help with maths problem solving. please help me?

Question

ok i have a few questions well actually alot.

1. how many of the first ten. positive whole numbers can be expressed as the sm of two different prime numbers?

2.what is the largest double digit prime number that when written in reverse is also a prime number

3.an aunt gives her niece $1 on her first birthday,$2 on her second birthday, $4 on her third birthday, and so on doubling the amount each year. on what birthday was the niece given more than $1000 for the first time?

4.in a maths class of 26 students, each girl drew a triangle and each boy drew a rectangle. if there were 92 sides drawn in all how many girls were in the class

5.find the last palindromic date prior to 2000

hope you can help!!! 10 points for best answer

Answer 1

1. 2 + 2 = 4, 2 + 3 = 5, 2 + 5 = 7, 2 + 7= 9

    3 + 3 = 6, 3 + 5 =  8, 3 + 7 = 10

I count these 7.  Any others would just be duplicates.

2. 97

3. Oh, come on, do the math...

1 = $1  2 = $4  3=$8 4=$16, 5=$32, 6=$64, 7=$128, 8=$256, 9=$512 so on the tenth birthday, she would get 1,024

4.  I divided the class in 1/2.  If there were 13 boys and 13 girls, there would be 91 sides drawn.  So, since I needed one more side, I changed one girl into a boy.  I get that there are 14 boys and 12 girls.

5. ?