Question

Which example proves the following

statement is incorrect?
"The sum of two
primes is always
even."

Answer 1

The prime number 2.

Explanation:

Odd number + Odd number = Even number

An odd number plus another odd number equals an even number. And most prime numbers are odd, so you might think this is true. Is it?

Wrong. The prime number 2 is an even number and

Even number + Odd number = Odd number

Odd number + Even number = Odd number

So, there is a number that can make the sum of two prime numbers odd.