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There is need for a conjecture. It is an easily proven fact that an even number minus an even number is always an even number.

Q: What is a conjecture for an even number minus a even number?

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"IT IS ALWAYS A ODD"

The answer is an odd number.

The number 2 is even as well as prime.

an odd number.

It would be even.

Related questions

"IT IS ALWAYS A ODD"

Any even number minus another even number is either even or zero. Any odd number minus another odd number is also either even or zero.

even

YES

There is no answer to the question. An even number minus an even number gives an answer that is even. So the difference of two evens cannot be 25.

its another even number.

An odd number minus an odd number is an even number.

2 would be a counterexample to the conjecture that prime numbers are odd. 2 is a prime number but it is the only even prime number.

The Goldbach conjecture is probably one of the best known. The conjecture is that every even number greater than 2 can be expressed as a sum of two primes. T. Oliveira e Silva has confirmed the conjecture for number up to 4*10^18 but, despite many years of effort, the conjecture has not been proved.

An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Even minus odd will be odd.

Because the second number from an odd number is odd, and every other number is an odd number. In fact, if you add or subtract an even number with any number, the result keeps the same parity as the other number. So an odd number minus an even number is odd, while an even number minus and even number is even.

is an even number. EXAMPLE: 6 - 2 = 4- even.