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1 + 3 + 5 + ... + 19 + 21 + 23 = 144

You know this because there are six pairs of numbers which equal 24, and 24 x 6 = 144.

Q: What is the sum of the arithmetic series of odd numbers below 1 plus 3 plus 5 plus ... plus 23?

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Assuming the series is 1 + 3 + 5 + ... + 25, the answer is 169.

44

It is simply 100. ^wrong, its 340.. APEX(:

10. It is what you get when you add the two numbers together and divide by two and it is the number that is halfway between the two numbers.

it is simple arithmetic. to solve, just add the numbers using the addition property and recieve the answer of 34

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Assuming the series is 1 + 3 + 5 + ... + 25, the answer is 169.

44

495

No. A series is just a list of numbers, with some kind of 'rule' that tells you how you get from one number to the next one. What you have in your question looks like a sum, all ready to get added up.

These aren't numbers that can be manipulated with the usual processes of arithmetic.

It is simply 100. ^wrong, its 340.. APEX(:

10. It is what you get when you add the two numbers together and divide by two and it is the number that is halfway between the two numbers.

it is simple arithmetic. to solve, just add the numbers using the addition property and recieve the answer of 34

simple, when doing arithmetic, line up the numbers on a paper and if you add correctly you should get 18.28.

The plus sign, +, is used to add two numbers together. It is one of the four basic arithmetic operations along with:Subtract, -Multiplication, x or *Division, / or ÷

4 plus 10 plus 16 plus 70 equals 100. To find the sum of this series, simply add all the numbers together.

Add in base two arithmetic 1101 + 1110 + 101 =