i think nikunj is ryt

even no.s have a diff of 2

nd prime nos have a diff of 2,4,6..........hence if one even no can be made by addition of two prime numbers then all of the even no.s can be made

eg

8= 3+5  sum of two primes

 

10= 8+2 =3+5+2=(3+2)+5 =5+5   sum of two primes

                   or =3+(5+2)= 3+7     sum of two primes

 

12 = 8+4 =(3+4)+5=7+5        sum of two primes.......

and so on

 

 

nd himanshu  all prime numbers are odd (except 2) but all oddnos are not primes

two odd no's will give even no on addition but the odd nos may not be primes