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Is there always an even number before every odd number in the set of whole numbers?
yes there is!
Is an odd number before every even number?
Yes.
How are even numbers and odd numbers alike?
There is an even number before and after every odd number and vice versa.
Why is the number of chromosomes always even?
because every chromosome must have a pair to survive
Why is the gcf of any even number always even?
By definition, every even number has 2 as a factor. That means that every set of even numbers will have at least 2 as a common factor. The GCF might be higher, but if it has 2 as a factor, it's even.
Is an even number plus an even number always even?
Yes, an even number plus an even number is always even. Also, and odd number plus an odd number is always even.
Is there an even numbers before every odd number in the set of whole numbers?
Yes.
What happens when you add an odd number and an odd number?
Two odd numbers always sum to an even number. Always. Two even numbers always sum to an even number, and an odd number and an even number always sum to an odd number.
Why is an even number plus an even number always even?
An even number + another even number are always even because if you think in terms of a number line, an even number always skips the odd numbers, when adding, so to speak. If you have 2+2 you are skipping 3. Think of every addition of even numbers broken down into 2's for a minute. 12+4 = 12+2+2, so you start at 12, skip 13, then skip 15.
Why is the product of an even number and any other number always even?
When you multiply numbers together, the factors of the product are the factors of all of the multiplicands, and every even number includes at least one factor of 2.
The difference of two even number is always an even number?
Yes, the difference between two even numbers is always an even number.
Why is the greatest common factor of two even numbers always even?
Even numbers, by definition, are divisible by 2. That means that every even number has at least one 2 as a factor. If every even number has one, then any set of even numbers will have at least one 2 as a common factor. Since that number has two as a factor, it's even.
