How many even numbers between 122 and 143? You could just make a list of all the even numbers between 122 and 143 and then count them, but what fun would that be?
Instead, we have created this simple process with a small formula to calculate exactly how many even numbers there are between 122 and 143.
We start by determining the first even number and last even number between 122 and 143. The numbers between 122 and 143 start with 123 and end with 142. That means that the first even number is 124 and the last even number is 142.
Now you add 2 to the difference of the last even number and the first even number, and then divide the sum by 2. Here is the formula and the answer to "How many even numbers between 122 and 143?"
N = (Last - First + 2) ÷ 2
N = (142 - 124 + 2) ÷ 2
N = 20 ÷ 2
N = 10
Even numbers between 122 and 143 = 10
Even Numbers Between Calculator
Use the tool below to calculate the number of even numbers between another set of numbers.