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If the number (count) of odd values to sum is odd, then the answer is odd.
If the number (count) of odd values to sum is even, then the answer is even.

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โˆ™ 2009-10-13 20:28:55
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Q: How can you tell if the sum of 13 plus 45 plus 24 plus 17 is even or odd?
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Related questions

How can you determine weather a sum of severals numbers such as 13 plus 45 plus 24 plus 17 is even or odd?

Count how many of the numbers are odd. If an odd number of them are odd, then their sum is odd. If an even number of them are odd, then their sum is even.


How can you determine whether the sum of several numbers such as 13 plus 45 plus 24 plus 17 is even or odd without actually calculating the sum?

Even plus even equals even. Odd plus odd equals odd. Odd plus even equals odd. 13 + 45 (odd plus odd) will be even. Even plus 24 will be even. Even plus 17will be odd. 13 + 45 + 24 + 17 will be odd.


Why is the sum of three odd numbers always odd?

Because the sum of two odd numbers is always even and the sum of that even number plus another odd number is always odd.


Is 4 plus 5 even or odd?

The 4 is even. The 5 is odd. Their sum, 9, is odd. The sum of (one even number) + (one odd number) is always odd.


Why is the sum of an odd or even number odd or even?

The sum of an odd and even number is always odd because there's always one left over. Think of any odd number as being any even number plus one. If you add two even numbers, the answer is always even. If you add an even and an odd (plus one), the answer is always odd.


Why is the sum of an odd and even number odd?

The sum of an odd and even number is always odd because there's always one left over. Think of any odd number as being any even number plus one. If you add two even numbers, the answer is always even. If you add an even and an odd (plus one), the answer is always odd.


Why is the sum os an even and odd number a odd number?

The sum of an odd and even number is always odd because there's always one left over. Think of any odd number as being any even number plus one. If you add two even numbers, the answer is always even. If you add an even and an odd (plus one), the answer is always odd.


What is the sum of an even and odd?

An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Even plus odd is odd.


Is the sum of an odd number and an even number always even?

No. Sum of odd + odd = even Sum of odd + even = odd Sum of even + even = even


Will the sum of an odd number and an even number be odd or eve?

An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Odd plus even is odd.


Can you tell if sum of several numbers will be even or odd?

Yes, all you have to do is to count the number of ODD numbers in the list. If it is odd, then the sum will be odd; if even, so will the sum. Knowing this can help you run a quick validity check when you sum up a list of numbers. (The method works because: a) the sum of two even numbers is even, and b) the sum pf two odd numbers is even, but c) the sum of an even number and an odd number is odd. Hence, if you only determine whether there are any unpaired odd numbers, you know the answer.)


The sum of an even integer and an odd integer is always odd?

An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Even plus odd is odd.


The sum of two odd numbers is always what?

Sum of two odd numbers are always even, and the sum of 2 even numbers are also even. The sum of an odd number & an even number are always odd.


What is the sum of two odd and even numbers?

The sum of two odd numbers or two even numbers is an even number. The sum of an odd number and an even number is an odd number.


Will the sum of two odd numbers be even or odd?

The sum of two odd numbers is always even.


Is sum of odd numbers always even?

The sum of two odd numbers is always even; the sum of three odd numbers is always odd; the sum of four odd numbers is always even; the sum of five odd numbers is always odd; etc


When does the sum odd number plus even number equal even number?

In normal arithmetic, never.


The sum of two odd numbers is always odd?

An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Odd plus odd is odd.


What are the three consecutive odd integers with sum of -30?

It cannot be done. The basic rules of math. odd integer plus odd integer = even integer. odd integer plus even integer = odd integer. Always. odd integer plus odd integer plus odd integer = odd integer. Always.


What is the sum of a odd number and a even number?

The sum of an odd number and an even number will always give an odd number. Ex: 2 + 5 = 7


Can you add an even and an odd number where the sum of the numbers will be even?

No. No matter what you use, the sum of an odd number and an even number will always be odd.


What is the sum of one odd and one even?

Odd + even = odd


Is the sum of an odd number and an even number odd or even?

Odd


Which pair of numbers has an odd product and an even sum?

Any two odd numbers will have an odd product and an even sum.


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.