Because three odd numbers can be expressed as 2a + 1, 2b + 1 and 2c + 1. Adding these gives 2(a + b + c) + 3: 2(a + b + c) is obviously even, being a multiple of 2, and 3 is equally obviously 1 more than another even number, so your total comprises two even numbers plus 1, ie an odd number.
There are no 5 odd numbers that when added together make 30.Two odd numbers added together make an even numberAn odd number plus and even number makes an odd number.From the five odd numbers:Take two of them and add them together getting an even number and four odd numbersAdd another of the odd numbers to this even number and you will have three odd numbersAdd two of these together and you will have one even and one odd number.Finally add these odd and even numbers together and the result will be an odd numberBut 30 is an even number, so cannot be the sum of five (or any odd number of) odd numbers.
You get an even number
Yes. Try it right now. Any two odd numbers, add them together.
Can not be done! An odd number of odd numbers will ALWAYS add up to an odd number.
Think of an odd number as an even number with 1 left over. So if you add two even numbers that each have 1 left over, the left overs add up to 2. So it's two even numbers added together plus 2.
15
Not possible ! If you add an odd number of odd numbers together, the result will ALWAYS be odd !
There are no 5 odd numbers that when added together make 30.Two odd numbers added together make an even numberAn odd number plus and even number makes an odd number.From the five odd numbers:Take two of them and add them together getting an even number and four odd numbersAdd another of the odd numbers to this even number and you will have three odd numbersAdd two of these together and you will have one even and one odd number.Finally add these odd and even numbers together and the result will be an odd numberBut 30 is an even number, so cannot be the sum of five (or any odd number of) odd numbers.
Two is the only even prime number. When you add an odd number to another odd number, you get an even number. When you add an even number to an odd number, you get an odd number. 91 is an odd number, therefore the answer is 2 and 89.
There cannot be two such numbers.
You get an even number
It is not possible to add together 5 odd numbers to make an even number.
Yes. Try it right now. Any two odd numbers, add them together.
An odd number of odd numbers can not add up to an even number. There fore any 9 (odd) odd numbers can not add up to 50 (even).
None. Any two odd numbers add up to an even number.
Can not be done! An odd number of odd numbers will ALWAYS add up to an odd number.
no...all even numbers that are added together are even.