No, it is not.
odd
That happens because 5 is an odd number. An odd number times an odd number will give you an odd product; an odd number times an even number will give you an even product. The same happens for the multiples of any other odd number.
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Even times odd is odd.
It is an even number.
Any pair of one even and one odd number will have an even product and an odd sum.
Even. 2 x 3 = 6 for example
No two consecutive numbers have a product that is an even number. Any two consecutive numbers include one odd number and one even number. The product of one odd number and one even number is always an odd number.
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Even times odd is even/
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Odd times even will be odd.
An even number
It will alway be even, because it will always be the product of an odd and an even number, which is always even.