Question

For prime numbers p and q, p + q = 102 and p > q. what is the least possible value of p - q

Answer 1

Find the prime number closest to p+q/2 = 51
Possible values are (47,55) , (43,59)>> satisfies

Since 55 is composite number, but 59 in prime
least value of p-q = 59 - 43 = 16