Question

Express $52$ as a sum of two odd primes.

Answer 1

$52$ can be written as

$52=1+51$ ($1$ is neither a prime number nor a composite number)

$52=2+50$ ($2$ is an even prime while $50$ is a composite number)

$52=3+49$ ($49$ is a composite number)

$52=4+48$ (Both $4$ and $48$ are composite number )

$52=5+47$. Clearly, both $5$ and $47$ are odd prime numbers.

Thus, $52$ can be expressed as sum of $5$ and $47$.