# The sums of what four odd integers is nineteen?

Matthew Fonda | Certified Educator

There are no four odd integers with a sum of 19. This is because the sum of four odd numbers is always going to be even. Using the  following rules, we can see why this is true:

1. The sum of two odd numbers is always even.
2. The sum of two even numbers is always even.

odd + odd + odd + odd
= (odd + odd) + (odd + odd)
= even + even    (by rule 1)
= even                 (by rule 2)

Therefore, there are no four odd integers with a sum of 19, since 19 is odd but the sum of four odd integers is even.

mchandrea | Student

The sum of four odd integers could never be odd. Therefore, there is no answer to your question. If you add two odd numbers, the answer would always be even. If you add two even numbers, the answer would still be even.

For example.

3 + 5 = 8                                    Odd + Odd = Even

2 + 4 = 6                                    Even + Even = Even

Let's try adding four odd numbers.

3 + 5 + 7 + 9 = 24          Odd + Odd + Odd + Odd = Even

user9604503 | Student

1. The sum of 2 odd integers is even.

2. The sum of 2 even integers is even.

It is impossible to get 19 with 4 odd integers.

(Odd Integer+Odd Integer)+(Odd Integer+Odd Integer)

=Even+Even

=Even

parama9000 | Student

This is not possible.

Odd no. +Odd no.= Even no.

Even no. + Odd no.= Odd no.

Odd no. + Odd no. = Even no.