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

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"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

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.

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.

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.

An odd number minus an odd number is an even 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.

its another even number.

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

Always odd.

always even ex: 100-4=96

The answer is an odd number.

Goldbach's conjecture says that every even number greater than two can be expressed as the sum of 2 primes. If 30 could not be expressed as the sum of two primes, then this would disprove the conjecture. As it is, 30 can be expressed as the sum of two primes. You can express it as 11+19. Thus, Goldbach's conjecture holds in this case.

The answer will be odd.

The answer will be odd.

The number 2 is even as well as prime.

It would be even.

An odd number.

No, it is a number. A conjecture is a theory.

There is not "the" conjecture: there are several. The oldest and probably best known unsolved conjecture in number theory is the Goldbach conjecture. According to it every even integer greater than two can be expressed as the sum of two prime numbers.

There is no conjecture about the sum of the first 30 positive even numbers. The answer can be derived and proven. A statement that has been proven is no longer a conjecture.

It would be even.

One possible conjecture is that each square number up to 1000 has 4 factors. The conjecture is manifestly false, but it is still a conjecture.

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